### 国際会議発表International Conferences

#### 2023

- A. Fujita, N. Pholsen, R. Kawata, S. Ji, T. Kamei , M. Okano, S. Iwamoto and Y. Ota, ” Two dimensional photonic crystal nanocavity with quantum dots integrated on a glass clad Si waveguide using transfer printing”, 1st International Workshop on Quantum Information Engineering (QIE2023), P13, Okinawa Institute of Science and Technology (OIST), Okinawa, Japan. Oct. 2023.
- K. Iijima, S. Ishida, H. Matsukiyo, S. Ji, H. Otsuki, M. Nishioka, T. Makino, H. Kato and S. Iwamoto, ” Fabrication and optical characterization of air bridged diamond photonic crystal cavities”, 1st International Workshop on Quantum Information Engineering (QIE2023), P8, Okinawa Institute of Science and Technology (OIST), Okinawa, Japan. Oct. 2023.
- (Invited) S. Iwamoto, ” How Can Integrated Photonics Boost Quantum Technology?”, 28th Microoptics Conference (MOC2023), SQ-1, Miyazaki, Japan, Sep.2023.
- C. Zhang and S. Iwamoto, ” Design of a Heterostructured Valley Photonic Crystal Waveguide Supporting a Slow-Light Mode with a Large Mode Width”, 28th Microoptics Conference (MOC2023), G-2, Miyazaki, Japan, Sep.2023.
- Z. Dai, W. Lin, and S. Iwamoto, ” Rate Equation Analysis for Deterministic and Unidirectional Lasing in Ring Resonators with an S-shaped Coupler”, 2023 International Conference on Solid State Devices and Materials (SSDM2023), H-3-04, Nagoya, Japan, Sep. 2023.
- (Invited) S. Iwamoto, H. Yoshimi, K. Kuruma, R. Miyazaki, and Y. Ota, ” Slow light waveguide based on semiconductor valley photonic crystal”, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXI in SPIE Optics + Photonics 2023, 12648-32, San Diego, USA, Aug. 2023.
- (Invited) S. Iwamoto, ” Topological states of light in nanophotonic structures”, 22nd International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON 22), Mo A-1, Munster, Germany, Aug. 2023.
- N. Ishida, M. Ezawa, G. Lu. W. Lin, Y. Ota, and S. Iwamoto, ” Topological corner states in photonic bilayer square lattice with π flux”, 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META2023), Session 1P2, P17, Paris, France, July 2023.
- (Invited) Y. Ota, S. Gao, and S. Iwamoto, ” Ultrathin magneto-optical devices based on all-dielectric metasurfaces”, 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META2023), Session 2A41, Paris, France, July 2023.
- G. Lu, Y. Ota, and S. Iwamoto, ” Lasing oscillation in twisted quadrupole topological photonic crystals”, 25th International Conference on the Electronic Properties of Two-Dimensional Systems & 21st International Conference on Modulated Semiconductor Structures (EP2DS-25&MSS-21), Grenoble, France, July 2023.
- (Invited) F. Tian, Y. Ota, and S. Iwamoto, ” Microwave Design of a Nano-optomechanical System with Exceptional Point at Room Temperature”, The Progress In Electromagnetics Research Symposium (PIERS) 2023, Prague, Czech, July 2023.(online presentation)
- (Invited) S. Takahashi, Y. Imanishi, Y. Ashida, S. Tamaki, K. Yamashita, T. Ueda, H. T. Phan, K. Wakabayashi, Y. Hatsugai and S. Iwamoto, ” Microwave Topological Edge States in Three-Dimensional Structures”, The 7th A3 metamaterial forum 2023, I-22, Kyoto, Japan, June 2023.
- A. Balčytis, X, H. Dinh, T. Ozawa, Y. Ota, T. Baba, S. Iwamoto, A. Mitchell, and T. G Nguyen, ” Synthetic frequency dimension state coupling in modulated LNOI ring cavity devices”, The 2023 CLEO Conference and Exhibition, SW3O. 1, San Jose, USA, May 2023.
- Y. Yang, S. Gao and S. Iwamoto, ” Design of a nanocavity in an AlN-diamond hybrid nanobeam structure with a photonic band gap”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-46, Tokyo, Japan, Mar. 2023.
- H. Thanh Phan, S. Takahashi, S. Iwamoto and K. Wakabayashi, “Zak Phase and the Existence of Topological States in Three-Dimensional Photonic Crystals”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-37, Tokyo, Japan, Mar. 2023.
- S. Takahashi, Y. Ashida, H. T. Phan, K. Yamashita, T. Ueda, K. Wakabayashi and S. Iwamoto, “Microwave Observation of a Second-Order Topological Boundary State in a Three-Dimensional Woodpile Photonic Crystal”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-34, Tokyo, Japan, Mar. 2023.
- N. Pholsen, Y. Ota and S. Iwamoto, “Numerical Design of a GaAs Nanobeam Cavity on a Silicon Nitride Waveguide for Efficiently Generating Single Photons by Resonant Excitation”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-23, Tokyo, Japan, Mar. 2023.
- G. Lu, Y. Ota and S. Iwamoto, “A topological nanocavity in photonic crystal slabs exhibiting quadrupole topological phase”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-20, Tokyo, Japan, Mar. 2023.
- R. Kawata, A. Fujita, P. Natthajuks, S. Iwamoto and Y. Ota, “High-Q Two-dimensional Photonic Crystal Nanocavity on Glass with a Top Glass Plate”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-19, Tokyo, Japan, Mar. 2023.
- H. Yoshimi, H. Kagami, S. Okada, W. Lin, T. Amemiya, Y. Ota, N. Nishiyama and S. Iwamoto, “Experimental Investigation for Meron Polarization Textures in Band Structures of Valley Photonic Crystals”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-12, Tokyo, Japan, Mar. 2023.
- Y. Ishii, S. Trushin, G. Lu, S. Iwamoto and Y. Ota, “Analysis of photonic band structure for InP/Si hetero twist-stacked photonic crystal slabs”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-05, Tokyo, Japan, Mar. 2023.
- F. Tian, M. Takiguchi, E. Kuramochi, H. Sumikura, M. Notomi and S. Iwamoto, “Demonstration of optically tunable coupling between two nanomechanical oscillators”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), 30-E-03, Tokyo, Japan, Mar. 2023.
- S. Gao, Y. Ota and S. Iwamoto, “Design of an Ultra-thin Faraday Rotator based on a Magneto-Photonic Crystal”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), 29-A-05, Tokyo, Japan, Mar. 2023.
- T. Nakama, R. Nakamura, A. Balcytis, H. Ito, T. Baba, T. Ozawa, Y. Ota and S. Iwamoto, “Observation of topological states in Si photonics SSH structure”, The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-59, Tokyo, Japan, Mar. 2023.
- S. Ji, T. Tajiri, X. F. Liu, H. Kiyama, A. Oiwa, J. Ritzmann, A. Ludwig, A. D. Wieck and S. Iwamoto, “Polarization-independent absorption enhancement of a GaAs quantum well embedded in an air-bridge bull’s-eye cavity with metal”,The 13th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-XIII), P-57, Tokyo, Japan, Mar. 2023.

#### 2022

- A. Balcytis, T. Nguyen, X. H. Dinh, T. Ozawa, Y. Ota, T. Baba, S. Iwamoto and A. Mitchell, “LNOI ring resonators for synthetic frequency dimension photonics”, 24th Australian Institute of Physics Congress, Adelaide, Australia, Dec. 2022.
- S. Iwamoto, J. Kwoen, and Y. Arakawa, “Development of 1.5-um InAs Quantum Dots on InP Substrate towards On-Chip Light Sources and Design of Photonic Nanostructured Waveguide for Dispersion Compensation”, The 12nd International Symposium on Photonics and Electronics Convergence -Advanced Nanophotonics and Silicon Device Systems- (ISPEC2022), D-3, Tokyo, Japan, Dec. 2022.
- (Keynote) S. Iwamoto “Semiconductor-based topological nanophotonics: fundamentals and recent progress”, 35th International Microprocesses and Nanotechnology Conference (MNC 2022), Tokushima, Japan, Nov. 2022.
- (Invited)S. Iwamoto “Topological Slow-Light Waveguide Based On Semiconductor Vallery Photonic Crystal”, Asia Communications and Photonics Conference (ACP) and International Conference on Information Photonics and Optical Communications (IPOC)(ACP/IPOC 2022), Shenzhen, China and virtual, Nov. 2022.
- S. Ji, T. Tajiri, X. F. Liu , H. Kiyama, A. Oiwa, J. Ritzmann, A. Ludwig, A. D. Wieck and S. Iwamoto “Polarization-Independent Enhancement of Optical Absorption in a GaAs Quantum Well Embedded in an Air-bridge Bull’s-eye Cavity”, 2022 International Conference on Solid State Devices and Materials (SSDM2022), A-10-03, Chiba, Japan Sept. 2022.
- H. Yoshimi, T. Yamaguchi, S. Ishida, Y. Ota and S. Iwamoto “Demonstration of an Efficient Light Coupler to a Valley Photonic Crystal Waveguide Formed at a Bearded Interface”, 2022 International Conference on Solid State Devices and Materials (SSDM2022), A-10-01, Chiba, Japan Sept. 2022.
- W. Lin, Y. Ota and S. Iwamoto, “A Method for Generating Spatiotemporal Polarization Topologies in Dichromatic Light Beams”, 27th Microoptics Conference (MOC2022), Jena, Germany Sept. 2022.
- T. Yamaguchi , H. Yoshimi, M. Seki , M. Ohtsuka, N. Yokoyama, Y. Ota , M. Okano, and S. Iwamoto, “Optical characterization of valley photonic crystal waveguides fabricated with CMOS-compatible process”, 27th Microoptics Conference (MOC2022), Jena, Germany Sept. 2022.
- (Invited) Y. Ota, Y. Arakawa and S. Iwamoto, “Semiconductor topological nanophotonics incorporating light emitters”, 12th International Conference on Metamaterials, Photonic Crystals and Plasmonics （META2022), Session 1A6, online (Spain), Jul. 2022.
- T. Xiao, Z. Luo, K. Hiramatsu, A. Isozaki, T. Itoh, Z. Cheng, M. Nomura, S. Iwamoto and K. Goda, ” On-chip chiral-field-enhanced Raman optical activity for biosensing”, Conference on Lasers and Electro-Optics Pacific Rim 2022 (CLEO-OR 2022), CPDP-06, Sapporo, Japan Jul.2022.
- S. Ji, T. Tajiri, X.F. Liu, H. Kiyama, A. Oiwa, J. Ritzmann, A. Ludwig, A. D. Wieck and S. Iwamoto, “Polarization-independent Light Emission from Air-bridge Bull’s-eye Cavities Containing a GaAs Quantum Well”, Conference on Lasers and Electro-Optics Pacific Rim 2022 (CLEO-PR 2022), CTuP8A-04, Sapporo, Japan Jul.2022.
- (Invited) R. Nakamura, T. Nakama, A. Balcytis, T. Ozawa, Y. Ota, S. Iwamoto, H. Ito and T. Baba, ” Topological modes observed in Si photonics SSH integrated circuit”, Conference on Lasers and Electro-Optics Pacific Rim 2022 (CLEO-PR 2022), CThA8D-02, Sapporo, Japan Jul.2022.
- Y. Ashida, K. Yamashita, T. Ueda, K. Wakabayashi, S. Iwamoto and S. Takahashi, “Microwave Hinge State in a Three-Dimensional Photonic Crystal Composed of Simple Cubic Lattices”, Conference on Lasers and Electro-Optics Pacific Rim 2022 (CLEO-PR 2022), CFA8H-03, Sapporo, Japan Jul.2022
- S. Takahashi, T. Tajiri, Y. Arakawa, S. Iwamoto and W. L. Vos, “Transport of Circularly Polarized Light in Three Dimensional Chiral Photonic Crystals”, Conference on Lasers and Electro-Optics Pacific Rim 2022 (CLEO-PR 2022), CFP8J-06, Sapporo, Japan Jul.2022
- K. Kuruma, B. Pngault, C. Chia, D.Renaud, P. Hoffmann, S. Iwamoto, C. Ronning and M. Lončar, “Optical Coupling between a Single Tin-vacancy Center and a Photonic Crystal Nanocavity in Diamond”, Conference on Lasers and Electro-Optics Pacific Rim 2022 (CLEO-PR 2022), CPDP-04, Sapporo, Japan Jul.2022
- N. Pholsen, Y. Ota, R.Katsumi, Y. Arakawa and S. Iwamoto, “Design of a quantum-dot single-photon source on a silicon nitride waveguide for efficient and indistinguishable photon generation”, Conference on Lasers and Electro-Optics Pacific Rim 2022 (CLEO-PR 2022), P-CTu8-22, Sapporo, Japan Jul.2022.
- S. Gao, Y. Ota, T. Liu and S. Iwamoto, “Design of an All-dielectric Magneto-optical Metasurface with Giant Faraday Effect and High Light Transmission”, Conference on Lasers and Electro-Optics Pacific Rim 2022 (CLEO-PR 2022), CFA8G-02, Sapporo, Japan Jul.2022.
- (Invited) S. Iwamoto “Semiconductor-based topological nanophotonics”, 2022 Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices (AWAD 2022), Virtual, Jul. 2022
- S. Iwamoto “Creating photonic topology in integrated photonics platforms”, The 6th A3 Metamaterials Forum, Seoul, Korea and Virtual, Jun. 2022.
- (Invited) S. Iwamoto “Optical cavities in topological photonic crystals”, The NanoPhoton conference on ‘Fundamentals and applications of semiconductor nanocavities’ , Copenhagen, Denmark, June 2022.
- (Invited) Y. Ota, Y. Arakawa, and S. Iwamoto, “Topological Nano/Micro/High-Power Lasers”, The 2022 CLEO Conference and Exhibition, JF2B.4, San jose, USA and Virtual, May 2022.
- W. Lin, Y. Ota, Y. Arakawa, and S. Iwamoto, “Demonstration of on-Chip Optical Skyrmionic Beam Generators”, The 2022 CLEO Conference and Exhibition, SM2N.4, San jose, USA and Virtual, May 2022.
- C. F. Fong, Y. Ota, Y. Arakawa, S. Iwamoto, and Yuichiro K. Kato, “Intrinsically Chiral Modes Near Exceptional Points in Modified H1 Photonic Crystal Cavity Modes”, The 2022 CLEO Conference and Exhibition, SM3H.7, San jose, USA and Virtual, May 2022.
- T. Feng, Y. Ota, and S. Iwamoto, “Exceptional-Point Encirclement in an Integrated Non-Hermitian Optomechanical System”, The 2022 CLEO Conference and Exhibition, JTh3A.64, San jose, USA and Virtual, May 2022.
- S. Iwamoto “Topological photonics in integrated photonic platforms”, Bulk-Edge/Boundary Correspondence 2022 (BE/BC2022) International workshop,Online (Zoom) & University of Tsukuba, Japan, Feb.2022
- C. Zhang “Theoretical analysis on photonic analog of quantum spin Hall effect in a square-lattice based photonic topological insulator”, Bulk-Edge/Boundary Correspondence 2022 (BE/BC2022) International workshop,P3, Online (Zoom) & University of Tsukuba, Japan, Feb.2022

#### 2021

- (invited) Y. Ota, Y. Arakawa and S. Iwamoto “Semiconductor Topological Nanophotonics”, IEEE International Electron Devices Meeting (IEDM), San Francisco, CA, USA & on-demand, Dec.2021
- (invited) Y. Ota，S. Iwamoto and Y. Arakawa, “Transfer printing for hybrid-integrated nanophotonics on chip”,OPJ2021 – Optics & Photonics Japan 2021 Joint Symposia on Optics Program, 27pCJ5, Tokyo, Japan, Oct.2021
- (invited) S. Iwamoto “Topological Nanophotonics Based on Semiconductor Photonic Crystals”, OPTICA Webinar, Nov. 2021 (online) [web]
- W. Zhan, J. Kwoen, T. Imoto, S. Iwamoto, and Y. Arakawa, “E-band InAs/GaAs Tri-layer Quantum Dot Lasers with Low Threshold Current Densities”, The 11th International Symposium on Photonics and Electronics Convergence -Advanced Nanophotonics and Silicon Device Systems- (ISPEC2021), P-24, Tokyo, Japan, Dec.2021 (online virtual symposium)
- R. Nakamura, A. Balčytis, H. Ito, T. Baba, T. Ozawa, Y. Ota, and S. Iwamoto, “Wavefunction Observation of Topological Bulk & Edge States in Si Photonics SSH Structure”, The 11th International Symposium on Photonics and Electronics Convergence -Advanced Nanophotonics and Silicon Device Systems- (ISPEC2021), P-06, Tokyo, Japan, Dec.2021 (online virtual symposium)
- S. Iwamoto, “Ring-cavity Laser Based on Valley Photonic Crystal Slow-light Waveguide Structure”, The 11th International Symposium on Photonics and Electronics Convergence -Advanced Nanophotonics and Silicon Device Systems- (ISPEC2021), C-2, Tokyo, Japan, Dec.2021(online virtual symposium)
- T. Liu, Y. Ota and S. Iwamoto, “One-side excited one-way surface modes in epsilon-near-zero magneto-optical waveguides”, EP2DS-24/MSS-20, M-PS-3-04,Toyama, Japan, Nov. 2021 (online format)
- F. Tian, Y. Ota and S. Iwamoto, “Theoretical analysis of optically controlled parity-time symmetry in optomechanics”, EP2DS-24/MSS-20, M-PS-4-07, Toyama, Japan, Nov. 2021 (online format)
- (Invited) Y. Ota, S. Iwamoto and Y. Arakawa, “Hybrid integrated light sources on silicon assembled by transfer printing”, 2021 IEEE Photonics Conference (IPC), Oct.2021 (online format)
- (Invited) Y. Ota, Y. Arakawa, and S. Iwamoto, “Topological nanocavity lasers and topological high-power lasers “, DPG and DPG-Tagung (DPG Meeting) of the Condensed Matter Section (SKM21), Oct.2021 (online format)
- T. Yamaguchi, H. Yoshimi, M. Seki, M. Ohtsuka, N. Yokoyama, Y. Ota, M. Okano and S. Iwamoto, “Fabrication of valley photonic crystals with CMOS-compatible process”, 26th Microoptics Conference (MOC), G-3, Sept. 2021 (online format)
- C. Zhang , H. Yoshimi , Y. Ota and S. Iwamoto, “Two-dimensional topological photonic crystals with helical edge states below the light line”, 26th Microoptics Conference (MOC), G-2, Sept. 2021 (online format)
- R. Miyazaki, K. Kuruma, H. Yoshimi, R. Katsumi, T. Yamaguchi, Y. Ota, Y. Arakawa and S. Iwamoto, “Lasing from a valley photonic crystal ring resonator with a bearded interface”, 2021 International Conference on Solid State Devices and Materials (SSDM) E-5-04, 6-9 Sept. 2021 (virtual conference)
- Armandas Balčytis, Tomoki Ozawa, Yasutomo Ota, Satoshi Iwamoto, Jun Maeda, Toshihiko Baba, “Synthetic Dimension Photonics on a Si CMOS Platform”, Conference on Lasers and Electro-Optics (CLEO), Stu1F. 4, May 2021. (A Virtual Conference)
- Kazuhiro Kuruma, Hironobu Yoshimi, Yasutomo Ota, Ryota Katsumi, Masahiro Kakuda, Marko Lončar, Yasuhiko Arakawa and Satoshi Iwamoto, “Single photon generation in a topological slow light waveguide”, Conference on Lasers and Electro-Optics (CLEO), FW4I.2, May 2021. (A Virtual Conference)
- Wenbo Zhan, Jinkwan Kwoen, Takaya Imoto, Satoshi Iwamoto1 and Yasuhiko Arakawa, “InAs/GaAs Tri-layer Quantum Dot Lasers”, COMPOUND SEMICONDUCTOR WEEK 2021 (CSW-2021), TuD2-5, 11 May 2021. (online conference)

#### 2020

- N. Ishida, Y. Ota, W. Lin, Y. Arakawa, and S. Iwamoto, “Analysis of Threshold Gain Difference in a Topological Edge State Laser”, 10th International Symposium on Photonics and lectronics Convergence (ISPEC 2020), S-29, November 2020 (web symposium)
- W. Zhan, J. –K. Kwoen, K. Watanabe, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Growth of InAs/GaAs Trilayer Quantum Dots with Emission Wavelength beyond 1.4 µm”, 10th International Symposium on Photonics and lectronics Convergence (ISPEC 2020), S-27, November 2020 (web symposium)
- S. Iwamoto, H. Yoshimi, T. Yamaguchi, Y. Ota and Y. Arakawa, “Slow-Light Waveguide in Semiconductor Valley Photonic Crystal”, 10th International Symposium on Photonics and lectronics Convergence (ISPEC 2020), E-3, November 2020 (web symposium)
- S. Ji, T. Tajiri, H. Kiyama, A. Oiwa, and S. Iwamoto, “Design of Semiconductor Bull’s-eye Optical Cavity for High-efficiency Quantum Media Conversion using a Gate-defined Quantum Dot”, 2020 International Conference on Solid State Devices and Materials (SSDM2020), E-8-02, Toyama, Japan, September (2020) (web conference format)
- (Keynote) Satoshi Iwamoto,”Topological waveguides and nanocavities based on semiconductor photonic crystals”, METANANO 2020 (V International Conference on Metamaterials and Nanophotonics), Tbilisi, Republic of Georgia, Sept. 2020 (web conference format)
- H.Yoshimi, T.Yamaguchi, R.Katsumi, Y.Ota, Y.Arakawa, and S.Iwamoto, “Slow Light Waveguide Based on Topological Edge States in Valley Photonic Crystals”, Conference on Lasers and Electro-Optics (CLEO), STu3J.7, San Jose, California, USA, May 2020. (web conference format)
- R.Katsumi, Y.Ota, T.Tajiri, M.Kakuda, H.Akiyama, S.Iwamoto, and Y.Arakawa, “Efficient single photon sources transfer-printed on Si with unidirectional light output”, Conference on Lasers and Electro-Optics (CLEO), FF2D.3, San Jose, California, USA, May 2020. (web conference format)
- N. Ishida, Y. Ota, W. Lin, Y. Arakawa, and S. Iwamoto, “Investigation on a single-mode array laser based on a topological edge state”, International workshop “Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts“, P 16, Tokyo, Japan, February (2020).
- (Invited) S. Iwamoto, “Light Propagation in Semiconductor Valley Photonic Crystals”, International workshop “Variety and universality of bulk-edge correspondence in topological phases:From solid state physics to transdisciplinary concepts“, Tokyo, Japan, February (2020).
- (Invited) S. Iwamoto, Y. Ota, T. Yamaguchi, H. Yoshimi, and Y. Arakawa, “Topological waveguides and nanoacvities using semiconductor photonic crystals”, SPIE Photonics West 2020, Paper 11274-46, The Moscone Center,San Francisco, USA, February (2020).
- S. Iwamoto, “Semiconductor-based topological photonics”, The 1st SNU-UT Workshop on Nanophotonics, Seoul National University, Seoul, Korea, January (2020).
- T. Yamaguchi, “Topologically-protected valley kink state in a slab-type photonic crystal waveguide”, SThe 1st SNU-UT Workshop on Nanophotonics, Seoul National University, Seoul, Korea, January (2020).
- R. Katsumi, “Quantum-dot single-photon sources transfer-printed on a CMOS Si photonic chip“, The 1st SNU-UT Workshop on Nanophotonics, Seoul National University, Seoul, Korea, January (2020).

#### 2019

- (Invited) Y. Ota, R. Katsumi, A. Osada, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Hybrid-integrated silicon quantum photonics toward scalable photonic quantum information processing”, The 42nd PhotonIcs & Electromagnetics Research Symposium (PIERS) in Xiamen, Xiamen, China, December (2019).
- W. Lin, Y. Ota, Y. Arakawa, and S. Iwamoto, “Higher-order Poincaré sphere beam generation via a micro ring resonator”, International Symposium on Hybrid Quantum Systems 2019 (HQS2019), Wed-A1-4, Matsue, Shimane, Japan, December (2019).
- Y. Ota, F. Liu, R. Katsumi, K. Watanabe, K. Wakabayashi, Y. Arakawa, and S. Iwamoto, “Light Trapping in a Higher-Order Topological Corner State”, The 9th International Symposium on Photonics and Electronics Convergence-Advanced Nanophotonics and Silicon Device Systems-(ISPEC2019), P-28, Tokyo, Japan, November (2019).
- W. Zhan, J. –K. Kwoen, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Emission at 1.39 μm from InAs/GaAs Trilayer Quantum Dots”, The 9th International Symposium on Photonics and Electronics Convergence-Advanced Nanophotonics and Silicon Device Systems-(ISPEC2019), P-32, Tokyo, Japan, November (2019).
- R. Katsumi, Y. Ota, A. Osada, T. Yamaguchi, T. Tajiri, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Hybrid Integration of a Quantum-Dot Single-Photon Emitter on a CMOS-Processed Si Waveguide Using Transfer Printing”, The 9th International Symposium on Photonics and Electronics Convergence-Advanced Nanophotonics and Silicon Device Systems-(ISPEC2019), P-30, Tokyo, Japan, November (2019).
- R. Katsumi, Y. Ota, A. Osada, T. Tajiri, T. Yamaguchi, M. Kakuda, S. Iwamoto, H. Akiyama, and Y. Arakawa, “SLocal tuning of transfer-printed quantum-dot single-photon sources on a CMOS silicon chip”, THE TWENTY-FOURTH MICROOPTICS CONFERENCE, G-6, Toyama, Japan, November 2019.
- (Invited) S. Iwamoto, “Integrated topological photonics using semiconductor-based photonic nanostructures”, The International Symposium on Plasmonics and Nanophtonics (iSPN2019), Kobe, Japan, November 2019.
- (Invited) S. Iwamoto, “Semiconductor-based topological photonics”, Partners for International Business Workshop, Enschede, Netherlands, October 2019.
- (Invited) Y. Ota, R. Katsumi, A. Osada, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Hybrid integration of quantum dot-nanocavity systems on silicon”, Frontiers in Optics + Laser Science APS/DLS, FM3D.4, Washington, DC, USA, September 2019.
- (Invited) S. Iwamoto, “Generation of Structured Light Using Spin-orbit Interaction of Light in Photonic Nanostructures”, Optomagnonics 2019 at Cambridge, Cambridge, UK, September 2019.
- W. Lin, Y. Ota, Y. Arakawa, and S. Iwamoto, “Optical Skyrmionic Beam Generation Using a Micro Cavity”, Optomagnonics 2019 at Cambridge, Cambridge, UK, September 2019.
- (Invited)Y. Ota, R. Katsumi, A. Osada, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Hybrid integration of quantum/classical light sources on Si using transfer printing”, 2019 International Conference on Solid State Devices and Matrials (SSDM2019), B-1-01, Nagoya, Japan, September 2019.
- K. Kuruma, Y. Ota, S. Iwamoto and Y. Arakawa, “Scheme for Coherent Control of Vacuum Rabi Oscillations in a Quantum Dot-Cavity System using Geometric Phases”, 2019 International Conference on Solid State Devices and Matrials (SSDM2019), B-6-04, Nagoya, Japan, September 2019.
- T. Tajiri, K. Kuruma, Y. Sakai, H. Kiyama, A. Oiwa, J. Ritzmann, A. Ludwig, A. D. Wieck, Y. Ota, Y. Arakawa, S. Iwamoto, “Fabrication and Optical Characterization of Photonic Crystal Nanocavities with Electrodes for Gate-Defined Quantum Dot”, 2019 International Conference on Solid State Devices and Matrials (SSDM2019), E-2-04, Nagoya, Japan, September 2019.
- (Invited) S. Iwamoto, “Topological photonics using semiconductor photonic crystals”, The 4th A3 Metamaterials Forum 2019 (A3META2019), Sapporo, Japan, August 2019.
- (Invited) Y. Ota, R. Katsumi, A. Osada, M. Kakuda, S. Iwamoto, Y. Arakawa, “Integrated quantum dot single photon sources on Si”, The 11th International Conference on Information Optics and Photonics(CIOP2019), Xi’an China, August 2019.
- (Invited) S. Iwamoto, “Semiconductor topological photonic crystal nanocavities”, International Workshop on New Trends in Topological Insulators 2019 & Variety and Universality of Bulk-edge Correspondence in Topological Phases (NTTI2019 and BEC2019), IP-09, Hiroshima, Japan, July 2019.
- Y. Ota, F. Liu, R. Katsumi, K. Watanabe, K. Wakabayashi, Y. Arakawa, and S. Iwamoto, “Observation of a topological corner state in a two-dimensional photonic crystal in the optical regime”, International Workshop on New Trends in Topological Insulators 2019 & Variety and Universality of Bulk-edge Correspondence in Topological Phases (NTTI2019 and BEC2019), PP-26, Hiroshima, Japan, July 2019.
- H. Yoshimi, T. Yamaguchi, Y. Ota, Y. Arakawa, and S. Iwamoto, “Numerical Analysis on Edge States at Zigzag and Bearded Interfaces in Valley Photonic Crystals”, International Workshop on New Trends in Topological Insulators 2019 & Variety and Universality of Bulk-edge Correspondence in Topological Phases (NTTI2019 and BEC2019), PP-27, Hiroshima, Japan, July 2019.
- (Invited) S. Iwamoto, “Confinement of light in semiconductor using topological concept”, Canada-Japan Workshop on Hybrid Quantum Systems, Ottawa, Canada, June 2019.
- (Invited) S. Iwamoto, “Topological Localized States in Semiconductor Photonic Crystals”, International Workshop TOPOLOGY, Tsukuba, Japan, June 2019.
- I. Kim, Z. Sun, Y. Arakawa, and S. Iwamoto, “Multi-band valley-protected topological edge states in GaAs-based nanophononic crystals with complete phononic bandgaps”, Compound Semiconductor Week 2019, TuA1-8, Nara, Japan, May 2019.
- S. Takahashi, S. Oono, Y. Hatsugai, Y. Arakawa, and S. Iwamoto, “Numerical Investigation of Topological Edge States in a GaAs-Based Three-Dimensional Chiral Photonic Crystal”, Compound Semiconductor Week 2019, MoP-D-5, Nara, Japan, May 2019.
- Y. Kinuta, S. Takahashi, K. Yamashita, J. Tatebayashi, S. Iwamoto, and Y. Arakawa, “Chiral Cavity Mode in a GaAs-Based Three-Dimensional Photonic Crystal Fabricated by a Micro-Manipulation Method using an Optical Microscope”, Compound Semiconductor Week 2019, MoP-D-2, Nara, Japan, May 2019.
- W. Zhan, S. Ishida, J. Kwoen, S. Iwamoto, and Y. Arakawa, “1.6 µm Emission from InAs QDs in Metamorphic InGaAs Matrix”, Compound Semiconductor Week 2019, MoP-A-8, Nara, Japan, May 2019.
- W. Lin, Y. Ota, Y. Arakawa, and S. Iwamoto, “An On-chip Full Poincaré Beam Emitter Based on an Optical Micro-ring Cavity”, Conference on Lasers and Electro-Optics (CLEO),SW4J.4, San Jose, California, USA, May 2019.
- R. Katsumi, Y. Ota, A. Osada, T. Yamaguchi, T. Tajiri, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Quantum-dot single-photon source on a CMOS-processed silicon waveguide”, Conference on Lasers and Electro-Optics (CLEO),FM1M.2, San Jose, California, USA, May 2019.
- Y. Ota, R. Katsumi, K. Watanabe, F. Liu, K. Wakabayashi, S. Iwamoto, and Y. Arakawa, “Nanocavity based on a topological corner state in a two-dimensional photonic crystal”, Conference on Lasers and Electro-Optics (CLEO),SW4J.1, San Jose, California, USA, May 2019.
- (Invited) A. Osada, Y. Ota, R. Katsumi, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Strongly-coupled single quantum dot-cavity system on a silicon waveguide”, International Conference on Nano-photonics and Nano-optoelectronics 2019(ICNN2019),ICNN-4-04, Yokohama, Japan, April 2019.
- I. Kim, Y. Arakawa, and S. Iwamoto, “Design of GaAs-based valley phononic crystals with multiple complete phononic bandgaps”, Photonics West 2019, 10927-61, San Francisco, CS, USA, February 2019.
- (Invited) Y. Ota, S. Iwamoto and Y. Arakawa, “ Lasing in a topological nanocavity with quantum dot gain”, Photonics West 2019, 10939-8, San Francisco, CS, USA, February 2019.

#### 2018

- T. Yamaguchi, Y. Ota, R. Katsumi, A. Osada, S. Ishida, Y. Arakawa, and S. Iwamoto, “Observation of light transmission in a GaAs slab valley photonic crystal waveguide with sharp bends”, International workshop ”Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” (BEC2018X), P 6, Tokyo, Japan, December 2018.
- Z. Sun, I. Kim and S. Iwamoto, “Design of valley phononic crystal with piezoelectric material”, International workshop ”Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” (BEC2018X), P 15, Tokyo, Japan, December 2018.
- W. Lin, Y. Ota, Y. Arakawa, and S. Iwamoto, “Topological light from optical micro-ring cavity”, International workshop ”Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” (BEC2018X), P 5, Tokyo, Japan, December 2018.
- (Invited) S. Iwamoto, “Photonic crystal nanocavities by topological concept”, International workshop ”Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” (BEC2018X), Tokyo, Japan, December 2018.
- C. F. Fong, Y. Ota, S. Iwamoto, and Y. Arakawa, “Scheme for Conversion between Electronic Spin and Photonic Orbital Angular Momentum using a Photonic Crystal with an Embedded Quantum Dot”, The Excitonics and Polaritonics International Conference, P01, Singapore, Singapore, December 2018.
- S. Iwamoto, T. Yamaguchi, Y. Ota, and Y. Arakawa, “Light Propagation in Semiconductor Valley Photonic Crystal Slab”, 8th international symposium on photonics and electronics convergence (ISPEC 2018), E-3, Tokyo, Japan, December 2018.
- Y. Ota, R. Katsumi, K. Watanabe, S. Iwamoto and Y. Arakawa, “Demonstration of a Topological Photonic Crystal Nanocavity Laser with Quantum Dot Gain”, 8th international symposium on photonics and electronics convergence (ISPEC 2018), P-26, Tokyo, Japan, December 2018.
- A. Osada, Y. Ota, R. Katsumi, T. Yamaguchi, M. Kakuda, S. Iwamoto, and Y. Arakawa, “On-Chip Excitation of Single Quantum Dots using a Silicon Waveguide”, 8th international symposium on photonics and electronics convergence (ISPEC 2018), P-29, Tokyo, Japan, December 2018.
- W. Zhan, J. –K. Kwoen, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Growth of InAs/GaAs Bilayer Quantum Dots for Long-Wavelength Emission”, 8th international symposium on photonics and electronics convergence (ISPEC 2018), P-30, Tokyo, Japan, December 2018.
- T. Yamaguchi, Y. Ota, R. Katsumi, S. Ishida, A. Osada, Y. Arakawa, and S. Iwamoto, “Observation of Light Propagation through Sharp Bends in a Slab-type Valley Photonic Crystal Waveguide”, 8th international symposium on photonics and electronics convergence (ISPEC 2018), P-32, Tokyo, Japan, December 2018.
- H. Yoshikawa, J. –K. Kwoen, T. Doe, M. Izumi, S. Iwamoto, Y. Arakawa, “Characteristics of a Quantum Dot Infrared Photodetector on On-Axis Si (100) Substrate”, 8th international symposium on photonics and electronics convergence (ISPEC 2018), P-33, Tokyo, Japan, December 2018.
- A. Tamada, Y. Ota, K. Kurama, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Single Plasmon Generation in a Plasmonic Microring Resonator Embedding Self-Assembled Quantum Dots”, 8th international symposium on photonics and electronics convergence (ISPEC 2018), P-36, Tokyo, Japan, December 2018.
- W. Vos, T. Tajiri, S. Takahashi, C. A. Harteveld, D. A. Grishina, S. Iwamoto and Y. Arakawa, “Reflectivity of Finite 3D GaAs Photonic Band Gap Crystals”, MRS Fall Meeting, EP07.04.06, Boston, USA, November 2018.
- S. Takahashi, W. Vos, T. Tajiri, S. Iwamoto and Y. Arakawa, “Optical Properties of Direct Versus Inverse 3D Chiral Photonic Crystals”, MRS Fall Meeting, EP07.06.01, Boston, USA, November 2018.
- (Invited)S. Iwamoto, Y. Ota, K. Kuruma, T. Tajiri, S. Takahashi, R. Katsumi, M. Kakuda, K. Watanabe and Y. Arakawa, “Tailored Disorders in Photonic Crystals for Laser and Cavity QED Applications”, MRS Fall Meeting, EP07.10.01, Boston, USA, November 2018.
- (Invited) S. Iwamoto, T. Yamaguchi, Y. Ota, and Y. Arakawa, “Valley-Protected Edge State in Semiconductor Photonic Crystal Slab”, Workshop on Innovative Nanoscale Devices and Systems (WINDS2018), D-2, Hawaii, USA, November 2018.
- A. Tamada, Y. Ota, K. Kuruma, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Observation of single plasmon generation in a self-assembled InAs/GaAs quantum dot embedded in a transfer-printed plasmonic microring resonator”, The 23rd MICROOPTICS CONFERENCE (MOC2018), D-2, Taipei, Taiwan, October 2018.
- T. Yamaguchi, R. Katsumi, A. Osada, Y. Ota, S. Ishida, S. Iwamoto and Y. Arakawa, “Observation of topologically protected light propagation in a slab-type valley photonic crystal waveguide”, The 23rd MICROOPTICS CONFERENCE (MOC2018), C-2, Taipei, Taiwan, October 2018.
- (Invited) S. Iwamoto, “Topological Interface States in Semiconductor Photonic Crystals”, France-Japan Bilateral Workshop on Hybrid Quantum Systems, Paris, France, October 2018.
- K. Kuruma, Y. Ota, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Observation of Strong Coupling between a Single Quantum Dot and an L4/3 Photonic Crystal Nanocavity”, 2018 International Conference on Solid State Devices and Materials (SSDM2018), M-1-03, Tokyo, Japan, September 2018.
- (Invited) S. Iwamoto, Y. Ota, T. Yamaguchi, and Y. Arakawa, “Topological edge states in semiconductor-based photonic crystals”, China-Japan International Workshop on Quantum Technologies (QTech 2018), Hefei, China, August 2018.
- (Invited)S. Iwamoto, Y. Ota, R. Katsumi. K. Watanabe, and Y. Arakawa, “Topological Localized State in Photonic Crystal Nanobeam”, Progress In Electromagnetics Research Symposium (PIERS) 2018, Toyama, Japan, August 2018.
- (Invited) Y. Ota, R. Katsumi, A. Osada, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Chip-integrated Quantum-dot Single Photon Sources Fabricated by Transfer Printing”, Progress In Electromagnetics Research Symposium (PIERS) 2018, Toyama, Japan, August 2018.
- (Invited) S. Iwamoto, “Advances in quantum dot cavity quantum electrodynamics using photonic crystal nanocavities”, Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR) 2018,Workshop 5: Photonic Quantum Computing, Hong Kong, July 2018.
- R. Katsumi, Y. Ota, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Integration of multiple quantum-dot single-photon sources on a photonic waveguide by transfer printing”, 10th Biannual Conference on Quantum Dots (QD 2018), Tronto, Canada, June 2018.
- Y. Ota, R. Katsumi, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Lasing in a topological photonic crystal nanocavity”, Conference on Lasers and Electro-Optics(CLEO 2018), STh3A.4, San Jose Convention Center, San Jose, California, USA , May 2018.
- A. Osada, Y. Ota, R. Katsumi, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Quantum-dot nanolasers on Si photonic circuits”, Conference on Lasers and Electro-Optics(CLEO 2018), SF1A.7., San Jose Convention Center, San Jose, California, USA , May 2018.
- R. Katsumi, Y. Ota, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Quantum dot single photon sources transfer-printed on wire waveguides”, Conference on Lasers and Electro-Optics(CLEO 2018), FM1H.5., San Jose Convention Center, San Jose, California, USA , May 2018.
- T. Ishida, S. Takahashi, T. Tajiri, K. Watanabe, Y. Ota, S. Iwamoto, and Y. Arakawa, “Three-dimensional photonic crystal nanocavity fabricated by a micro-manipulation technique under optical microscope observation”, International Conference on Nano-photonics and Nano-optoelectronics 2018 (ICNN2018), ICNN8-4, Pacifico Yokohama, Yokohama, Japan, April 2018.
- Y. Ota, S. Iwamoto, and Y. Arakawa, “Analysis on Giant Light Scattering near a Dirac Point in a Photonic Crystal”, International Conference on Nano-photonics and Nano-optoelectronics 2018 (ICNN2018), ICNN8-3, Pacifico Yokohama, Yokohama, Japan, April 2018.
- A. Osada, Y. Ota, R. Katsumi, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Quantum-Dot Nanolaser Integrated on a Silicon Waveguide Buried in Silicon Dioxide by Transfer Printing”, International Conference on Nano-photonics and Nano-optoelectronics 2018 (ICNN2018), ICNN4-2, Pacifico Yokohama, Yokohama, Japan, April 2018.
- H. Yoshikawa, J. Kwoen, T. Doe, M. Izumi, S. Iwamoto, and Y. Arakawa, “Evaluation of inter-sublevel transition of InAs/GaAs quantum dot structures on on-axis Si (100) substrate by photocurrent measurement”, International Conference on Nano-photonics and Nano-optoelectronics 2018 (ICNN2018), ICNN2-2, Pacifico Yokohama, Yokohama, Japan, April 2018.
- R. Katsumi, Y. Ota, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Transfer-printed Quantum-dot Single Photon Sources for Efficient Waveguide Coupling”, International Conference on Nano-photonics and Nano-optoelectronics 2018 (ICNN2018), ICNN1-2, Pacifico Yokohama, Yokohama , Japan, April 2018.
- (Invited) Y. Arakawa, S. Iwamoto, J. Tatebayashi, Y. Ota, M. Holmes, and M. Arita, “Quantum dots for advanced light sources”, Utokyo-ANU Workshop on Quantum Control and Electronic Material and Devices,February 28-March1, Tokyo, Japan, February 2018.
- (Invited) Y. Ota, S. Iwamoto, Y. Arakawa, “A thresholdless quantum-dot photonic-crystal nanocavity laser“, SPIE Photonics West 2018, Novel In-Plane Semiconductor Lasers XVII, paper# 10553-31, The Moscone Center, San Francisco, USA, January 2018.
- (Invited) S. Iwamoto, T. Tajiri, S. Takahashi, Y. Ota and Y. Arakawa, “Three-dimensional functional photonic crystals made by micromanipulation”, Physics@Veldhoven, FT5.1, ‘NH Conference Center Koningshof, Veldhoven, Netherlands, January 2018.
- (Invited) S. Iwamoto, I. Kim, Y. Ota, R. Katsumi, and Y. Arakawa, “Topological Localized States in Quasi-1D Photonic and Phononic Crystals”, International workshop “Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” (BEC2018) , Tsukuba Univ., Ibaraki, Japan, January 2018.
- S. Takahashi, S. Oono, S. Iwamoto, Y. Hatsugai, and Y. Arakawa, “Optical Weyl points and topological edge states in semiconductor chiral photonic crystals” International workshop “Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” (BEC2018), Tsukuba Univ., Ibaraki, Japan, January 2018.
- I. Kim, S. Iwamoto, and Y. Arakawa, “Topologically Protected Elastic Waves in One-Dimensional Periodic Structures of Continuous Media”, International workshop ”Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts” (BEC2018), P-18, Tsukuba, Ibaraki, Japan, January 2018.

#### 2017

- K. Watanabe, S. Iwamoto, and Y. Arakawa, “Photoluminescence improvements of InAs-GaAs quantum-dot multiple layers by introducing GaAsP layers, “The 7th International Symposium on Photonics and Electronics Convergence (ISPEC2017), P-25, ENEOS Hall, The University of Tokyo, Tokyo, Japan, December 2017.
- Y. Ota, K. Watanabe , M. Kakuda, S. Iwamoto and Y. Arakawa, “Demonstration of Thresholdless Lasing in a Nanolaser with Quantum Dot Gain”, The 7th International Symposium on Photonics and Electronics Convergence (ISPEC2017), P-17, ENEOS Hall, The University of Tokyo, Tokyo, Japan, December 2017.
- K. Kuruma, Y. Ota, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Carrier Dynamics in a Quantum Dot-Nanocavity System Resolved via Vacuum Rabi Oscillations”, The 7th International Symposium on Photonics and Electronics Convergence (ISPEC2017), P-8, ENEOS Hall, The University of Tokyo, Tokyo, Japan, December 2017.
- R. Katsumi, Y. Ota, M. Kakuda, T. Miyazawa, K. Takemoto, S. Iwamoto, and Y. Arakawa, “Observation of optical coupling in a quantum dot-nanocavity-waveguide coupled system fabricated by transfer printing”< The 7th International Symposium on Photonics and Electronics Convergence (ISPEC2017), P-43, ENEOS Hall, The University of Tokyo, Tokyo, Japan, December 2017.
- M. Kakuda, Y. Ota, K. Kuruma, K. Watanabe, S. Iwamoto and Y. Arakawa, “Improved optical properties of low-density InAs-GaAs quantum dots after the optimization of partial capping and In-flush process”, The 7th International Symposium on Photonics and Electronics Convergence (ISPEC2017), P-27, ENEOS Hall, The University of Tokyo, Tokyo, Japan, December 2017.
- B. Jang, T. Tsuchizawa, H. Nishi, T. Nakamura, S. Iwamoto, and Y. Arakawa, “Hybrid distributed feedback quantum dot laser with laterally coupled grating”, The 7th International Symposium on Photonics and Electronics Convergence (ISPEC2017), P-15, ENEOS Hall, The University of Tokyo, Tokyo, Japan, December 2017.
- S. Ishida, S. Kako, K. Oda, S. Iwamoto, and Y. Arakawa, “Enhancement of Biaxial Tensile Strain using Suspended Cross-shaped Microstructures for N-dope Germanium”, The 7th International Symposium on Photonics and Electronics Convergence (ISPEC2017), P-10, ENEOS Hall, The University of Tokyo, Tokyo, Japan, December 2017.
- Q. H. Vo, Y. Ota, K. Watanabe, T. Kageyama, S. Iwamoto, and Y. Arakawa, “Observation of cavity mode emission from photonic crystal nanocavity with quantum dot active region embedded by MBE regrowth”, The 7th International Symposium on Photonics and Electronics Convergence (ISPEC2017), P-14, ENEOS Hall, The University of Tokyo, Tokyo, Japan, December 2017.
- Q. H. Vo, Y. Ota, K. Watanabe, T. Kageyama, S. Iwamoto, and Y. Arakawa, “A photonic crystal nanocavity with a quantum dot active region embedded by MBE regrowth”, 22nd Microoptics Conference (MOC’17), E-2, The University of Tokyo, Tokyo, Japan, November 2017.
- I. Kim, S. Iwamoto, and Y. Arakawa, “Imaging of Topologically Protected Elastic Mode in Silica 1D Phononic Crystal via Photoelastic Effect”, 22nd Microoptics Conference (MOC’17), G-5, The University of Tokyo, Tokyo, Japan, November 2017.
- I. Kim, S. Iwamoto, and Y. Arakawa, “Observation of Topological Interface State of Elastic Wave in 1D Phononic Crystal”, International Symposium on Hybrid Quantum Systems 2017 (HQS2017), Miyagi-Zao Royal Hotel, Miyagi, Japan, September 2017.
- T. Tajiri, S. Takahashi, Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Nanocavity laser and photonic waveguides integrated in three-dimensional photonic crystals”, International Symposium on Hybrid Quantum Systems 2017 (HQS2017), P16, Miyagi-Zao Royal Hotel, Miyagi, Japan, September 2017.
- S. Takahashi, T. Tajiri, Y. Ota, J. Tatebayashi, S. Iwamoto, and Y. Arakawa, “Circularly Polarized Spontaneous Emission from Quantum Dots in Three-Dimensional Semiconductor Chiral Photonic Crystals”, International Symposium on Hybrid Quantum Systems 2017 (HSQ2017), TU-A2-1, Miyagi-Zao Royal Hotel, Miyagi, Japan, September 2017.
- W. Lin, Y. Ota, S. Iwamoto, and Y. Arakawa, “A Numerical Investigation on the Directional Emission from a Quantum Dot Ensemble Embedded in an Asymmetric Optical Waveguide”, International Symposium on Hybrid Quantum Systems 2017 (HSQ2017), P17, Miyagi-Zao Royal Hotel, Miyagi, Japan, September 2017.
- M. Kakuda, Y. Ota, K. Kuruma, K. Watanabe, S. Iwamoto and Y. Arakawa, “Improved optical properties of low density InAs-GaAs quantum dots by controlling partial capping process”, 2017 International Conference on Solid State Devices and Materials, M-5-02, Sendai International Center, Sendai, Miyagi, Japan, September 2017.
- R. Katsumi, Y. Ota, K. Kuruma, A. Tamada, M. Kakuda, T. Miyazawa, K. Takemoto, S. Iwamoto and Y. Arakawa, “Fabrication of quantum dot-nanocavity-waveguide coupled systems via transfer printing method”, The 11st International Nano-Optoelectronics Workshop (iNOW2017), WeP8, Institute for Electronics and Information Technology in Tianjin of Tsinghua University, Qian’an, China, August 2017.
- Y. Ota, R. Moriya, N. Yabuki, M. Arai, M. Kakuda, S. Iwamoto, T. Machida and Y. Arakawa, “Coupling atomically-thin black phosphorus to a photonic crystal nanocavity”< The 24th General Congress of International Commission for Optics (ICO-24), Th2E-07, Keio Plaza Hotel, Tokyo, Japan, August 2017.
- K. Kuruma, Y. Ota, M. Kakuda,S. Iwamoto and Y. Arakawa, “Dephasing in a Quantum Dot-Nanocavity System Resolved via Time-domain Vacuum Rabi Oscillation”, The 24th General Congress of International Commission for Optics (ICO-24), Keio Plaza Hotel, Tokyo, Japan, August 2017.
- S. Takahashi, S. Oono, S. Iwamoto, Y. Hatsugai, and Y. Arakawa, “Topological Edge States by Resolving Weyl Points in Semiconductor Chiral Woodpile Photonic Crystals”, The 24th General Congress of International Commission for Optics (ICO-24), F1E-02, Keio Plaza Hotel, Tokyo, Japan, August 2017.
- S. Iwamoto and Y. Arakawa, “Design of Slab-Type Valley Photonic Crystals with Triangular Air Holes”, The 24th General Congress of International Commission for Optics (ICO-24), F1E-03, Keio Plaza Hotel, Tokyo, Japan, August 2017.
- I. Kim, S. Iwamoto, and Y. Arakawa, “Observation of topological interface state of elastic wave in a silica 1D phononic crystal”, The 8th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Session 3A23-5, Incheo, Korean, July 2017.
- S. Oono, S. Takahashi, S. Iwamoto, Y. Hatsugai, and Y. Arakawa, “Topological edge modes of light in all dielectric chiral woodpile structures stacked with pi-4 in-plane rotation”, 18th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN18), P5-240, Neubaukirche, Wurzburg, Germany, July 2017.
- S. Takahashi, S. Oono, S. Iwamoto, Y. Hatsugai, and Y. Arakawa, “Optical Weyl Points below the Light Line in Semiconductor Chiral Woodpile Photonic Crystals”, Conference on Lasers and Electro-Optics(CLEO 2017), JTu5A.42, San Jose Convention Center, San Jose, California, USA, May 2017.
- T. Tajiri, S. Takahashi, Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Guiding of laser light from a nanocavity in a three-dimensional photonic crystal”, Conference on Lasers and Electro-Optics(CLEO 2017), San Jose Convention Center, San Jose, California, USA, May 2017.
- Y. Ota, M. Kakuda, K. Watanabe, S. Iwamoto and Y. Arakawa, “Thresholdless lasing with quantum dot gain”, Conference on Lasers and Electro-Optics(CLEO 2017), STh4N.3, San Jose Convention Center, San Jose, California, USA , May 2017.
- R. Katsumi, Y. Ota, K. Kuruma, A. Tamada, M. Kakuda, T. Miyazawa, K. Takemoto, S. Iwamoto and Y. Arakawa, “Quantum dot-nanocavity-waveguide coupled systems fabricated by transfer printing”, International Conference on Nano-photonics and Nano-optoelectronics 2017 (ICNN2017), ICNN1-2, Pacifico Yokohama, Yokohama, Japan, April 2017.
- S. Iwamoto, Y. Ota, Y.Arakawa, “A Scheme for Generating Optical Vortex from a Quantum Dot using Degenerate Photonic Crystal Nanocavity Modes”, International Conference on Nano-photonics and Nano-optoelectronics 2017 (ICNN2017), ICNN1-4, Pacifico Yokohama, Yokohama , Japan, April 2017.
- W. Lin, Y. Ota, S. Iwamoto, and Y. Arakawa, “Spin-dependent Directional Emission from a Quantum Dot Ensemble Embedded in an Asymmetric Optical Waveguide”, International Conference on Nano-photonics and Nano-optoelectronics 2017 (ICNN2017), ICNN3-2, p24, Pacifico Yokohama, Yokohama , Japan, April 2017.

#### 2016

- M. Kakuda, Y. Ota, K. Kuruma, K. Watanabe, S. Iwamoto and Y. Arakawa, “Improving optical properties of low density InAs/GaAs quantum dots by controlling partial capping temperature”< The 6th International Symposium on Photonics and Electronics Convergence (ISPEC 2016) P-40, the University of Tokyo, Tokyo, Japan, November 2016.
- Y. Ota, D. Takamiya, K. Watanabe , M. Kakuda, S. Iwamoto and Y. Arakawa, 2Large Spontaneous Emission Coupling Factor in a Quantum Dot Nanolaser Driven by Cavity Resonant Excitation”, The 6th International Symposium on Photonics and Electronics Convergence (ISPEC2016), P-32, ENEOS Hall, The University of Tokyo, Tokyo, Japan, November 2016.
- J. Tatebayashi, Y. Ota, S. Ishida, S. Iwamoto and Y. Arakawa, “Nanowire-quantum dot lasers grown on AlGaAs/GaAs distributed Bragg reflectors”, The 6th symposium on Photonics and Electronics Convergence,P-41, Komaba, Japan, November 2016.
- S. Iwamoto, Y. Ota, S. Takahashi, T. Tajiri, K. Kuruma, and Y. Arakawa, “Engineering Light-Matter Interactions using Photonic Crystals toward Future Photonics and Electronics Convergence Systems”, The 6th International Symposium on Photonics and Electronics Convergence -Advanced Nanophotonics and Silicon Device Systems- (ISPEC2016), The University of Tokyo, Tokyo, Japan, November 2016.
- S. Ishida, S. Kako, K. Oda, T. Ido, S. Iwamoto, and Y. Arakawa, “Enhancement and control of biaxial tensile strain of suspended germanium cross-shaped microstructures under low temperature”, The 6th International Symposium on Photonics and Electronics Convergence-Advanced Nanophotonics and Silicon Device Systems, P-46, Komaba Research Campus, the University of Tokyo, Tokyo, Japan, November 2016.
- (Invited) S. Iwamoto, Y. Ota, S. Takahashi, T. Tajiri, K. Kuruma, M. Kakuda and Y. Arakawa, “Quantum-Dot Cavity Quantum Electrodynamics using Photonic Crystals”, German-Japanese Meeting on the Science of Hybrid Quantum Systems, dbb Forum, Berlin, Germany, November 2016.
- S. Ishida, S. Kako, K. Oda, T. Ido, S. Iwamoto, and Y. Arakawa. “Temperature dependence of the biaxial tensile strain in suspended Ge cross-shaped microstructures”, 29th International Microprocesses and Nanotechnology Conference,10P-7-31, ANA Crowne Plaza Kyoto, Kyoto, Japan, November 2016.
- (Invited) S. Iwamoto, S. Takahashi, I. Kim, T. Tajiri, Y. Ota, and Y. Arakawa, “Control of Light Polarization using Photonic and Phononic Crystals”, Asia Communications and Photonics Conference (ACP) ACP2016, AS2F.2, Shangri-La HoteWuhan, China, November 2016.
- J. Kwoen, J. Lee, T. Kageyama, K. Watanabe, S. Iwamoto, and Y. Arakawa, “InAs/GaAs Quantum Dots Grown Directly on Unpatterned Si(100) On-Axis Substrates”, The 6th International Symposium on Photonics and Electronics Convergence-Advanced Nanophotonics and Silicon Device Systems-(ISPEC2016), P38, ENEOS Hall,Meguro, Tokyo, Japan, October 2016.
- I. Kim, S. Iwamoto, Y. Arakawa, “Observation of enhanced photoelastic modulation using silica phononic crystal cavity”, 21st Microoptics Conference, David Brower Center, Berkeley, CA, USA, October 2016.
- A.Tamada, Y.Ota, K.Kuruma, J.Ho, K.Watanabe, S.Iwamoto, Y.Arakawa, “Lasing in a plasmonic microring resonator containing Quantum Dots”, International Conference on Solid State Devices and Materials, C-4-04, Tsukuba International Congress Center, Tsukuba, Japan, September 2016.
- J. Kwoen, K. Watanabe, S. Iwamoto, and Y. Arakawa, “InAs Quantum Dots Grown Directly on Unpatterned Si(100) On-Axis Substrates”, 19th International Conference on Molecular-Beam Epitaxy, Th‐C8, La Corum, Montpelier, France, September 2016.
- (Invited) S. Iwamoto, S. Takahashi, T. Tajiri, Y. Ota, and Y. Arakawa, 2Control of Quantum Dot Light Emission by Chiral Photonic Crystal Structures”, Progress In Electromagnetics Research Symposium (PIERS), Shanghai International Convention Center, Shanghai, China, August 2016.
- J. Tatebayashi, S. Kako, J. Ho, Y. Ota, S. Iwamoto and Y. Arakawa, “Growth of InGaAs/GaAs nanowire-quantum dots on AlGaAs/GaAs distributed Bragg reflectors for laser applications”, The 18th International Conference on Crystal Growth and Epitaxy, Mo1-G03-3, Nagoya Convention Center, Nagoya, Japan, August 2016.
- K. Kuruma, Y. Ota, M. Kakuda,S. Iwamoto and Y. Arakawa, “Time-resolved photoluminescence of a single quantum dot-nanocavity system in strong coupling regime”, International Nano-Optoelectronics Workshop, 5, p 118-119,Technical University of Munich and Wuerzburg Residence, Munich and Wuerzburg,, Germany , August 2016.
- B. Jang, K. Tanabe, S. Kako, S. Iwamoto, T. Tsuchizawa, H. Nishi, N. Hatori, M. Noguchi, T. Nakamura, K. Takemasa, M. Sugawara, and Y. Arakawa, “Fabrication of a hybrid silicon evanescent laser with quantum dot gain”, International Nano-Optolectronics Workshop, Technical University of Munich and Wuerzburg Residence, Munich and Wuerzburg,, Germany , August 2016.
- (Invited)Y. Arakawa, Jin Fa Ho, J. Tatebayashi, Y. Ota, S. Iwamoto, B. Jang, and K. Tanabe, “Recent advances in qua ntum dot lasers”, iNOW2016 International Nano Optoelectronics Workshop, Munich and Wuerzburg, Germany July 2016.
- T. Tajiri, S. Takahashi, S. Iwamoto, and Y. Arakawa, “Large Complete Photonic Band Gap between High Order Bands in a Three-Dimensional Photonic Crystal with Space Group No. 230”, The 12th International Symposium on Photonic and Electromagnetic Crystal structures, Poster session B, University of York, UK, July 2016.
- (Invited) S. Iwamoto, Y. Ota, S. Takahashi, T. Tajiri, K. Kuruma, M. Kakuda, and Y. Arakawa, “Quantum-Dot Cavity Quantum Electrodynamics using 2D and 3D Photonic Crystal Structures”, The 12th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS). University of York, York, UK, July 2016.
- D. A. Grishina, T. Tajiri, J. Hofste, O. S. Ojambati, E. Yuce, J. Perez-Vizcaino, S. Iwamoto, and W. L. Vos, “Cavity in a silicon inverse woodpile 3D photoniv band gap crystal”, The 12th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS). University of York, York, UK, July 2016.
- B. Jang, K. Tanabe, S. Kako, S. Iwamoto, T. Tsuchizawa, H. Nishi, N. Hatori, M. Noguchi, T. Nakamura, K. Takemasa, M. Sugawara, and Y. Arakawa, “Demonstration of a hybrid silicon evanescent quantum dot laser”, 21st Optoelectronics and Communications Conference / International Conference on Photonics in Switching 2016, PD2-2, TOKI MESSE Niigata Convention Center Niigata, Japan, July 2016.
- J. Ho, J. Tatebayashi, S. Sergent, C. F. Fong, S. Iwamoto and Y. Arakawa, “Demonstration of a plasmonic laser using quantum dot gain medium”, Compound Semiconductor Week 2016, TuB3-3, Toyama International Conference Center, Toyama, Japan, June 2016.
- T. Kageyama, Q. H. Vo, K. Watanabe, K. Takemasa, M. Sugawara, S. Iwamoto and Y. Arakawa, “Large modulation bandwidth (13.1 GHz) of 1.3 ?m-range quantum dot lasers with high dot density and thin barrier layer”, the 2016 Compound Semiconductor Week (CSW2016), MoC3-4, Toyama International Conference Center, Toyama, Toyama, Japan, June 2016.
- Y. H. Jhang, R. Mochida, K. Tanabe, K. Takemasa, M. Sugawara, S. Iwamoto, and Y. Arakawa, “Direct modulation of InAs/GaAs quantum dot Lasers on silicon at 60 ℃”, 2016 Compound Semiconductor Week, MoC3-3, Toyama International Conference Center, Toyama, Japan, June2016.
- (Invited) S. Iwamoto, S. Takahashi, T. Tajiri, Y. Ota, and Y. Arakawa, “Chiral Three-Dimensional Photonic Crystals for Controlling Light-Matter Interactions”, CIQM Frontiers in Quantum Materials and Devices Workshop, RIKEN, Wako, Saitama, Japan, June 2016.
- S. Takahashi, Y. Ota, T. Tajiri, J. Tatebayashi, S. Iwamoto, and Y. Arakawa, “Chiral Cavity Mode Emission from Quantum Dots in a Three-Dimensional Photonic Crystal”, 17th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN17), We8, Todaiji Temple Cultural Center, Nara, Japan, March 2016.
- Y. Ota, D. Takamiya, K. Watanabe, M. Kakuda, S. Iwamoto, and Y. Arakawa, “Enhanced spontaneous emission coupling factor in a nanolaser by cavity resonant excitation”, 17th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN17), We4, Todaiji Temple Cultural Center, Nara, Japan, March 2016.
- K. Kamide, S. Iwamoto, and Y. Arakawa, “Self-Pulsation in Coupled Cavity QED Systems”, 17th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN17), We6, Todaiji Temple Cultural Center, Nara, Japan, March 2016.
- (Invited) S. Iwamoto, Y. Ota, S. Takahashi, K. Kurum, and Y. Arakawa, “Quantum dot cavity quantum electrodynamics with photonic crystals, “SPIE Photonic West 2016, Paper 9757-21, San Francisco, CA, USA, February 2016.
- (Invited) Y. Ota, K. Kuruma, M. Kakuda, S. Iwamoto and Y. Arakawa, “Cavity quantum electrodynamics using semiconductor quantum dots embedded in photonic crystal nanocavities”, The CEMS International Symposium on Dynamics in Artificial Quantum Systems (DAQS2016), We07, ENEOS hall, Tokyo, Japan, January 2016.

#### 2015

- (Invited) K. Oda, T. Okumura, J. Kasai, S. Kako, S. Iwamoto, and Y. Arakawa, “Monolithic integrated Ge light emitters fabricated by epitaxial lateral overgrowth”, The Collaborative Conference on Crystal Growth, Energy Materials Nanotechnology, B35, p.76, Hong Kong, China, December 2015.
- J. Ho, J. Tatebayashi, S. Sergent, C. F. Fong, S. Iwamoto, Y. Arakawa , “Nanowire Plasmonic Laser with Quantum Dots as the Gain Medium”, The 5th International Symposium on Photonics and Electronics Convergence, P-12, Tokyo, Japan, December 2015.
- H. Jhang, K. Tanabe, B. Y. Jang, S. Iwamoto, and Y. Arakawa, “1.3-μm InAs/GaAs Quantum Dot Lasers Wafer-Bonded onto Silicon Substrates with Improved Bonding Strength”, The 5th International symposium on photonics and electronics convergence (ISPEC) , Tokyo, Japan, December 2015.
- J. Tatebayashi, S. Kako, J. Ho, Y. Ota, S. Iwamoto and Y. Arakawa, “Room-temperature Lasing in a Single GaAs Nanowire with InGaAs/GaAs Quantum Dots”, The 5th International Symposium on Photonics and Electronics Convergence, P-19, Tokyo, Japan, December 2015.
- M. Kakuda, K. Kuruma, J. Kwoen, Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Effect of capping layer growth conditions on the surface morphology of InAs/GaAs quantum dot wafers”, The 5th International Symposium on Photonics and Electronics Convergence (ISPEC 2015) P-56, the University of Tokyo, Tokyo, Japan, December 2015.
- K. Oda, T. Okumura, J. Kasai, S. Kako, S. Iwamoto, and Y. Arakawa, “Crystallinity improvement of Ge waveguides fabricated by epitaxial lateral overgrowth and chemical mechanical polishing”, The 5th International Symposium on Photonics and Electronics Convergence, P-7, p.49, Tokyo, Japan, December 2015.
- (Invited) S. Iwamoto, “Quantum physics in microoptics”, 20th MICROOPTICS CONFERENCE (MOC’15), TU3, FUKUOKA INTERNATIONAL CONGRESS CENTER, Fukuoka, Japan, October 2015.
- T. Kageyama, Q.H. Vo, K. Watanabe, S. Iwamoto, Y. Arakawa, “Suppression of Vertical Alignment in Multilayer Quantum Dot Structures: The Roles of Dot Density and Spacer Thickness”, 31st North American Molecular Beam Epitaxy Conference, Mo-07, 16, Iberostar Paraiso Beach, Mayan Riviera, Quintana Roo, Mexico, October 2015.
- S. Ishida, S. Kako, K. Oda, T. Ido, S. Iwamoto, and Y. Arakawa, “Suspended Ge cross-shaped microstructures for enhancing biaxial tensile strain”, International Conference on Solid State Devices and Materials, A-5-2, Sapporo Convention Center, Sapporo, Hokkaido, Japan, September 2015.
- T. Tajiri, S. Takahashi, J. Tatebayashi, S. Iwamoto, and Y. Arakawa, “Plate-Insertion Stacking Method for Three-Dimensional Photonic Crystal Fabrication”, 2015 International Conference on SolidState Devices and Materials, A-1-5, Sapporo Convention Center, Hokkaido, Japan, September 2015.
- K. Oda, T. Okumura, J. Kasai, S. Kako, S. Iwamoto, and Y. Arakawa, “Crystallinity improvement of Ge waveguides fabricated by epitaxial lateral overgrowth and chemical mechanical polishing”, 2015 International Conference on Solid State Devices and Materials (SSDM2015), A-5-3, Sapporo Convention Center, Hokkaido, Japan, September 2015.
- S. Takahashi, Y. Ota, T. Tajiri, J. Tatebayashi, S. Iwamoto, Y. Arakawa, “Spontaneous emission of circularly polarized light from quantum dots in three-dimensional chiral photonic crystals”, Energy Materials Nanotechnology Spain Meeting, C03, San Sebastian, Spain, September 2015.
- S. Takahashi, T. Tajiri, Y. Ota, J. Tatebayashi, S. Iwamoto, Y. Arakawa, “Enhanced Optical Activity in Three-Dimensional Chiral Photonic Crystals”, International Nano Optoelectronics Workshop, ThP3, Tokyo, Japan, August 2015.
- J. Ho, J. Tatebayashi, S. Sergent, C. F. Fong, S. Iwamoto, Y. Arakawa,”Stimulated emission from plasmonic modes in GaAs nanowires containing quantum dots”, International Nano-Optoelectronics Workshop, TuP12, Tokyo, Japan, August 2015.
- (Invited) Y. Arakawa, S. Iwamoto, M. Holmes Jun Tatebayashi, M. Arita, K. Choi, and J. Ho, “Advances in Nanowire Quantum Dots International Nano Optoelectronics Workshop, Tokyo, Japan, August 2015.
- J. Ho, J. Tatebayashi, S. Sergent, C. F. Fong, S. Iwamoto, Y. Arakawa,”Observation of stimulated emission from GaAs plasmonic nanowires containing InGaAs quantum dots”, 17th International Conference on Modulated Semiconductor Structures, Tu-B4-3, Sendai, Japan, July 2015.
- S. Takahashi, Y. Ota, T. Tajiri, J. Tatebayashi, S. Iwamoto, Y. Arakawa, “Controlled Radiative Life Time of Circularly Polarized Emission from Quantum Dots by Three-Dimensional Chiral Photonic Crystals”, 17th International Conference on Modulated Semiconductor Structures, Tu-B1-2, Sendai, Miyagi, Japan, July 2015.
- J. Kwoen, K.i Watanabe, S. Iwamoto, and Y. Arakawa, “Growth of S-K InAs Quantum Dots on Side Facets of GaAs Nanowire on Si (100) Substrate”, 17th International Conference on Modulated Semiconductor Structures, Tu-B4-5, Sendai International Center, Sendai, Miyagi, Japan, July 2015.
- C. F. Fong, Y. Ota, E. Harbord, S. Iwamoto, and Y. Arakawa, “Dynamic Nuclear Spin Polarization by P-shell Carriers in Single Quantum Dots at Zero External Magnetic Field”, 17th International Conference on Modulated Semiconductor Structures, Sendai, Miyagi, Japan, July 2015.
- T. Kageyama, K. Watanabe, Q. H. Vo, K. Takemasa, M. Sugawara, S. Iwamoto and Y. Arakawa, “Strain-Compensated InAs/GaAs Quantum Dot Lasers Grown by MBE”, 2015 Compound Semiconductor Week, 42nd International Symposium on Compound Semiconductors, We2O7.1, p.113, University of California Santa Barbara, Santa Barbara, USA, July 2015.
- (Invited) S. Iwamoto, Y. Ota, S. Takahashi, and Y. Arakawa, ”Advances in Quantum Dot Cavity Quantum Electrodynamics using Photonic Crystal Structures”, Progress In Electromagnetics Research Symposium (PIERS), FocusSession.SC3: Solid-state Quantum Photonics,Top Hotel, Prague, Czech Republic, July 2015.
- Q. H. Vo, K. Watanabe, T. Kageyama, S. Iwamoto, and Y. Arakawa, “Self-assembled formation of GaAsP nano-apertures above InAs/GaAs quantum dots by the thermal diffusion of phosphorus”, Compound Semiconductor Week, Tu3GN4.1, University of California Santa Barbara, Santa Barbara, California, the United States, June 2015.
- S. Takahashi, T. Tajiri, Y. Ota, J. Tatebayashi, S. Iwamoto, Y. Arakawa, “Circularly Polarized Light Emission of Quantum Dots at the Band Edge of Three-Dimensional Chiral Photonic Crystals”, CLEO: 2015, FF1C.2, San Jose, US, May 2015.
- Y. Ota, R. Ohta, N. Kumagai, S. Iwamoto, Y. Arakawa, “Single Emitter Vacuum Rabi Splitting Measured Through Direct Free Space Spontaneous Emission”, The Conference on Lasers and Electro-Optics and The Quantum Electronics and Laser Science Conference (CLEO/QELS 2015), FF1B.5, SanJose convention center, San Jose, California, USA, May 2015.
- Y. H. Jhang, K. Tanabe, S. Iwamoto, Y. Arakawa, “1.3-μm InAs/GaAs Quantum Dot Lasers on Silicon-on-Insulator Substrates by Metal-Stripe Bonding”, Conference on Lasers and Electro-Optics (CLEO): Science and Innovations, SW3F.4, San Jose, CA, USA, May 2015.
- M. Kuroki, S. Kako, S. Ishida, K. Oda, T. Ido, S. Iwamoto, and Y. Arakawa, “Germanium Photonic Crystal Nanobeam Cavity with Q > 1,300”, Conference on Lasers and Electro-Optics, San Jose Convention Center, San Jose, California, USA, May 2015.
- (Invited)J. Tatebayashi, S. Kako, J. Ho, Y. Ota, S. Iwamoto and Y. Arakawa, “Room-temperature lasing in GaAs nanowires embedding multi-stacked InGaAs/GaAs quantum dots”, Conference on Lasers and Electro-Optics:2015, SM2F.1, San Jose, California, USA , May 2015.

#### 2014

- S. Iwamoto and Y. Arakawa, “Control of light emission using photonic crystals”, IITH-Japan Symposium in Nanotechnology and Nanoscience, Indian Institute of Technology, Hyderabad, India, December 2014.
- S. Iwamoto, K. Tanabe, and Y. Arakawa, “Developments of innovative light sources for photonic electronic convergence systems”, The 4th International Symposium on Photonics and Electronics Convergence – Advanced Nanophotonics and Silicon Device Systems (ISPEC 2014) F-4, the University of Tokyo, Tokyo, Japan, November 2014.
- T. Rae, K. Tanabe, S. Iwamoto, and Y. Arakawa, “Investigation of Band-Filling Effect at Low Temperatures in InAs/GaAs Quantum Dot Lasers with p-Type Doping”, ISPEC 2014, P-41, p.87, The University of Tokyo, Tokyo, Japan, November 2014.
- J. Ho, J. Tatebayashi, S. Sergent, C. F. Fong, S. Iwamoto, and Y. Arakawa, “High temperature plasmonic lasing using GaAs-AlGaAs core-shell nanowires dispersed on a silver thin film”, The 4th International Symposium on Photonics and Electronics Convergence – Advanced Nanophotonics and Silicon Device Systems (ISPEC 2014 ) P-11 , the University of Tokyo, Tokyo, Japan, November 2014.
- Y. H. Hsiao, W. Wang, S. Iwamoto, and Y. Arakawa, “Spontaneous and Stimulated Raman Scattering in Silica-Cladded Silicon Hole-Shape-Modulated Photonic Crystal Waveguides ”, The 4th International Symposium on Photonics and Electronics Convergence – Advanced Nanophotonics and Silicon Device Systems (ISPEC 2014) P-13 , the University of Tokyo, Tokyo, Japan, November 2014.
- M. Kuroki, S. Kako, S. Ishida, K. Oda, T. Ido, S. Iwamoto and Y. Arakawa, “Fabrication and optical characterization of germanium L3-type photonic crystal nanobeam cavity”, The 4th International Symposium on Photonics and Electronics Convergence – Advanced Nanophotonics and Silicon Device Systems (ISPEC 2014) P-24, the University of Tokyo, Tokyo, Japan, November 2014.
- Y. H. Jhang, K. Tanabe, S. Iwamoto, and Y. Arakawa, “Fabrication of 1.3-μm InAs/GaAs quantum dot lasers metal-stripe-bonded onto silicon-on-insulator substrates”, The 4th International Symposium on Photonics and Electronics Convergence – Advanced Nanophotonics and Silicon Device Systems (ISPEC 2014) P-27, the University of Tokyo, Tokyo, Japan, November 2014.
- K. Tanabe, N. Hatori, M. Ishizaka, S. Kako, S. Iwamoto, T. Nakamura and Y. Arakawa,“Towards the Realization of QD Evanescent Hybrid Si Lasers”, The 4th International Symposium on Photonics and Electronics Convergence – Advanced Nanophotonics and Silicon Device Systems (ISPEC 2014) P-44, the University of Tokyo, Tokyo, Japan, November 2014.
- J. Kwoen, K. Watanabe, S. Iwamoto and Y. Arakawa, “MBE Growth of S-K InAs Quantum Dots on GaAs Nanowire on Si (100) Substrate”, The 4th International Symposium on Photonics and Electronics Convergence – Advanced Nanophotonics and Silicon Device Systems (ISPEC 2014) P-55, the University of Tokyo, Tokyo, Japan, November 2014.
- M. Kakuda, J. Kwoen, Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Low density InAs/GaAs quantum dots grown with high temperature partial capping under As2 irradiation”, The 4th International Symposium on Photonics and Electronics Convergence – Advanced Nanophotonics and Silicon Device Systems (ISPEC 2014) P-56, the University of Tokyo, Tokyo, Japan, November 2014.
- J. Tatebayashi, S. Kako, J. Ho, Y. Ota, S. Iwamoto, and Y. Arakawa, “Lasing oscillation in a single GaAs nanowire cavity with multi-stacked InGaAs/GaAs quantum dots”, The 4th International Symposium on Photonics and Electronics Convergence – Advanced Nanophotonics and Silicon Device Systems (ISPEC 2014) P-61, the University of Tokyo, Tokyo, Japan, November 2014.
- (Invited) Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Nonlinear optics in photonic crystal nanocavity quantum dot lasers”, SPIE Photonics Asia, 9277-19, Beijing, China, October 2014.
- J. Ho, J. Tatebayashi, S. Sergent, C. F. Fong, S. Iwamoto and Y. Arakawa, “Demonstration of GaAs based Plasmonic Laser”, International Conference on Solid State Device and Materials 2014, B-3-1, Tsukuba, Japan, September 2014.
- J. Tatebayashi, S. Kako, J. F. Ho, S. Iwamoto, and Y. Arakawa, “Lasing oscillation in multi-stacked InGaAs/GaAs quantum dots with a single GaAs nanowire cavity”, The 46th International Conference on Solid State Devices and Materials 2014, P-6-2, Tsukuba, Japan, September 2014.
- K. Kamide, S. Iwamoto, and Y. Arakawa, “Impact of dark excitons on fast single‐photon emissions in quantum dot‐nanocavity systems”, The 12th International Conference on Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS12), Tu3.2, p.48, Bremen, Germany, September 2014.
- J. Kwoen, M. Kakuda, Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Proposal of a two-temperature growth technique for enhanced uniformity of InAs/GaAs quantum dots”, The International Conference on Molecular Beam Epitaxy (MBE 2014), Flagstaff, Arizona, USA, September 2014.
- (Invited) Y. Ota, S. Iwamoto and Y. Arakawa, “Quantum dot cavity quantum electrodynamics using a photonic crystal nanocavity with high Q and small V”, Progress In Electromagnetics Research Symposium, 1P2b, Langham Place Guangzhou, Guangzhou, China, September 2014.
- (Invited)Y. Arakawa, Y. Ota, K. Kamide, and S. Iwamoto, “Quantum Dot Laser in the Cavity Quantum Electrodynamical Regime”, 24th IEEE International Semiconductor Laser Conference, WP1, Meliá Palas Atenea, Palma de Mallorca, Spain, September 2014.
- (Invited) S. Iwamoto, Y. Ota, and Y. Arakawa, “Frequency Conversion in Quantum-Dot Photonic-Crystal Nanocavity Laser”, The 6th IEEE International Nanoelectronics Conference, Sapporo, Hokkaido, Japan, July 2014.
- (Invited) S. Iwamoto, Y. Ota, H. Takagi, D. Takamiya, and Y. Arakawa, “Cavity Quantum Electrodynamics in Quantum Dot-Photonic Crystal Nanocavity Coupled System with Large g/k”, CLEO 2014 (the 2014 Conference on Lasers and Electro-Optics), SM3M.4, San Jose, CA, USA, June 2014.
- Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Measurement of the second order coherence of a nanolaser through its intra-cavity second harmonic generation”, The Conference on Lasers and Electro-Optics and The Quantum Electronics and Laser Science Conference (CLEO/QELS 2014), SW1G.2, San Jose, California, USA, June 2014.
- (Invited) S. Iwamoto and Y. Arakawa, “Tailoring Optical Properties of Materials by Engineering the “Environment””, The 16th Kavli Future Symposium: Nanomaterials Science in Asian Perspective, Seoul National University, Seoul, Korea, June 2014.
- T. Tajiri, S. Takahashi, Y. Ota, J. Tatebayashi, S. Iwamoto and Y. Arakawa, “High-Q Three-Dimensional Photonic Crystal Nanocavity with a -Layered Diamond Structure”, The 11th International Symposium on Photonic and Electromagnetic Crystal Structures, P-35, Fudan University, Shanghai, China, May 2014.
- S. Takahashi, T. Tajiri, Y. Ota, J. Tatebayashi, S. Iwamoto, and Y. Arakawa, “Circular Dichroism in a Three-Dimensional Semiconductor Chiral Photonic Crystal”, The 11th International Symposium on Photonic and Electromagnetic Crystal Structures, O-18, Fudan University, Shanghai, China, May 2014.
- (Invited) Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Self-frequency conversion in photonic crystal nanocavity quantum dot lasers”, SPIE Photonics West Conference 2014, 9002-33, California, USA, February 2014.

#### 2013

- K. Oda, T. Okumura, K. Tani, T. Ido, S. Kako, S. Iwamoto, and Y. Arakawa, “Properties of Ge Waveguides Fabricated by Low Temperature Selective Epitaxial Growth and Rapid Thermal Annealing”, The 3rd International Symposium on Photonics and Electronics Convergence, Tokyo, Japan, November 2013.
- J. Fu, A. Tandaechanurat, S. Iwamoto and Y. Arakawa, “High-Q nanocavity design with vertically mirror-symmetric three-dimensional woodpile photonic crystal”, The 3nd International Symposium on Photonics and Electronics Convergence -Advanced Nanophotonics and Silicon Device Systems, Tokyo, Japan, November 2013.
- K. Kamide, S. Kako, S. Iwamoto, and Y. Arakawa, “Conditions for Polariton Condensation and Photon Lasing in Quantum Dot Systems”, The 3rd International Symposium on Photonics and Electronics Convergence -Advanced Nanophotonics and Silicon Device Systems-, P-16, Komaba Research Campus, Univ. Tokyo, Tokyo, Japan, November 2013.
- R. Ohta, Y. Ota, S. Iwamoto, and Y. Arakawa, “Frequency Shift in Q-factor Control of Photonic Crystal Nanobeam Cavity”, International Symposium on Photonics and Electronics Convergence,P35, Tokyo, Japan, November 2013.
- S. Takahashi, A. Tandaechanurat, R. Igusa, Y. Ota, J. Tatebayashi, S. Iwamoto, and Y. Arakawa, “Manipulation of circular polarization in a three-dimensional chiral photonic crystal”, The 3rd International Symposium on Photonics and Electronics Convergence, Tokyo, Japan, November 2013.
- Y. Ota, D. Takamiya, R. Ohta, N. Kumagai, S. Ishida, S. Iwamoto and Y. Arakawa, “Strong coupling between a single semiconductor quantum dot and a high-Q H0 photonic crystal nanocavity”, The 3rd International Symposium on Photonics and Electronics Convergence, P-34, Ito International Research Center, Tokyo, Japan, November 2013.
- S. Iwamoto, S. Nakayama, S. Ishida and Y. Arakawa, “Silicon Light Emitting Diodes with Photonic Crystal Nanocavities”, The 3rd International Symposium on Photonics and Electronics Convergence, F-9, Tokyo, Japan, November 2013.
- R. Ohta, Y. Ota, S. Iwamoto, and Y. Arakawa, “Wavelength shift in MEMS-integrated photonic crystal nanobeam cavity ~Effects of adjacent waveguide width~”, International Symposium on Nanoscale Transport and Technology, PWe15, NTT BRL Atsugi Kanagawa Japan, November 2013.
- (Invited) Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Nonlinear photonic crystal nanocavities containing quantum dots”, 2013 EMN open access week, B12, Homeland Hotel, Chengdu, China, October 2013.
- J. F. Ho, S. Iwamoto, Y. Arakawa, “Design of efficient surface plasmon polariton modulator using Graphene”, MicroOptics Conference, Tokyo, Japan, October 2013.
- T. Tajiri, S. Takahashi, A. Tandaechanurat, S. Iwamoto and Y. Arakawa, “Design of a three-dimensional photonic crystal nanocavity based on a -layered diamond structure”, International Conference on Solid State Devices and Materials, K-5-5, Hilton Fukuoka Sea Hawk, Fukuoka, Japan, September 2013.
- T. Yamamoto, Y. Ota, S. Ishida, N. Kumagai, S. Iwamoto, Y. Arakawa, “Observation of enhanced exciton decay rate of single InAs quantum dots in nanoscale metal-semiconductor-metal plasmonic structures”, International Conference on Solid State Devices and Materials, K-5-2, Hilton Fukuoka Sea Hawk, Fukuoka, Japan, September 2013.
- D. Takamiya, Y. Ota, R. Ohta, H. Takagi, N. Kumagai, S. Ishida, S. Iwamoto, Y. Arakawa, “Large Vacuum Rabi Splitting in an H0 Photonic Crystal Nanocavity-Quantum Dot System”, The 10th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2013), MI2-2, ,Kyoto International Conference Center,Kyoto Kyoto, Japan, July 2013.
- (Invited) S. Iwamoto, Y. Ota, H. Takagi, N. Kumagai and Y. Arakawa, “Nonlinear Photonics in Single Quantum Dot-Photonic Crystal Nanocavity Couples Systems”, The 10th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2013), MI2-1, Kyoto International Conference Center, Kyoto, Kyoto, Japan, July 2013.
- Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Self-frequency Summing in Photonic Crystal Nanocavity Quantum Dot Lasers”, The 10th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2013), MI2-7, Kyoto International Conference Center, Kyoto, Kyoto, Japan, July 2013.
- J. Kwoen, K. Watanabe, Y. Ota, S. Iwamoto, and Y. Arakawa , “InAs Quantum Dot Embedded GaAs Nanowire Structure on Silicon for Single Photon Emission”, 16th International Conference on Modulated Semiconductor Structures(MSS-16), TuP36, Wroclaw University of Technology, Wroclaw, Poland, July 2013.
- S. Takahashi, A. Tandaechanurat, R. Igusa, Y. Ota, J. Tatebayashi, S. Iwamoto and Y. Arakawa, “Manipulation of circular polarization in a three-dimensional chiral photonic crystal”, 16th International Conference on Modulated Semiconductor Structures (MSS-16), TuP27, Wroclaw University of Technology, Wroclaw, Poland, July 2013.
- Y. H. Hsiao, S. Iwamoto, and Y. Arakawa, “Design of Slow-Light Grating Waveguides for Silicon Raman Amplifier”, The 10th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2013),WI2-5,Kyoto International Conference Center, Kyoto, Japan, July 2013.
- Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa , “Multi-color visible light generation by self-frequency doubling in photonic crystal nanocavity quantum dot lasers”, The Conference on Lasers and Electro-Optics and The Quantum Electronics and Laser Science Conference (CLEO/QELS 2013), CThF2, San Jose convention center, San Jose, California, USA, June 2013.
- J. Kwoen, K. Watanabe, Y. Ota, S. Iwamoto, and Y. Arakawa, “High-quality InAs quantum dot embedded in GaAs nanowire structures on silicon substrate”, The 40th International Symposium on Compound Semiconductors, TuA4-4, Kobe Convention Center, Kobe, Hyogo, Japan, May 2013.
- S. Sergent, M. Arita, S. Kako, K. Tanabe, S. Iwamoto, and Y. Arakawa, “High-Q (>6900) AlN 1D ladder-structure photonic crystal nanocavity fabricated by layer transfer”, The 40th International Symposium on Compound Semiconductors, TuA1-1, Kobe Convention Center, Kobe, Hyogo, Japan, May 2013.
- J. Tatebayashi, Y. Ota, K. Tanabe, M. Nishioka, S. Iwamoto and Y. Arakawa, “Formation of highly-uniform multi-stacked InGaAs/GaAs quantum-dots-in-nanowires for photovoltaic applications”, The 40th International Symposium on Compound Semiconductors, WeB1-1, Kobe Convention Center, Kobe, Hyogo, Japan, May 2013.
- (Invited) S. Iwamoto, H. Takagi, R. Ohta, Y. Ota, and Y. Arakawa, “Control of Quantum Dot-Photonic Crystal Nanocavity Coupled Systems”, ICNP/AOM 2013, The 7th International Conference on Nanophotonics(ICNP)/The 3rd Conference on Advanced In Optoelectronics and Micro/Nano Optics (AOM) , (IN)PD009, 香港理工大学,香港, May 2013.

#### 2012

- J. Fu, A. Tandaechanurat, S. Iwamoto and Y. Arakawa, ”Design of large-bandwidth single-mode operation waveguides in silicon woodpile structure using two guided modes”, The 2nd International Symposium on Photonics and Electronics Convergence -Advanced Nanophotonics and Silicon Device Systems- Tokyo, Japan, December 2012. (2012).
- D. Cao, A. Tandaechanurat, S. Nakayama, S. Ishida, S. Iwamoto, and Y. Arakawa, “Lasing oscillation in silicon-based three-dimensional photonic crystal nanocavity embedding InAs quantum dots”, The 2nd international symposium on photonic and electroics convergence advanced nanophotonics and silicon device system ISPEC 2012, Tokyo, Japan P-33, December 2012. (2012).
- J. F. Ho, S. Sergent, A. Enderlin, S. Iwamoto and Y. Arakawa, “Modification of Epitaxial GaAs Quantum Dot Emission by Gold Nanodisk Chain Waveguides”, The 2nd International Symposium on Photonics and Electronics Convergence, Tokyo, Japan, December 2012.
- S. Iwamoto, S. Nakayama, D. Cao, A. Tandaechanurat, S. Ishida and Y. Arakawa, “Silicon-based Nano Light Sources Using Photonic Crystals Structures”, The 2nd International Symposium on Photonics and Electronics Convergence-Advanced Nanophotonics and Silicon Device Systems-, F-4, Tokyo, Japan, December 2012. (2012).
- S. Iwamoto, S. Nakayama, S. Ishida, and Y. Arakawa, “Silicon Light Emitting Diodes with Photonic Crystal Structures”, Joint Workshop on Advances in Nanophotonics, Wuerzburg, Germany, November 2012.
- S. Sergent, M. Arita, S. Kako, K. Tanabe, S. Iwamoto, and Y. Arakawa, “New method for the fabrication of high-Q (>6300) 1D photonic crystal nanobeam cavities in GaN/AlN quantum dot stacks grown on SiC”, International Workshop on Nitride Semiconductors, OD2-2, p 318, Sapporo, Japan, October 2012.
- (Invited) M. Nomura, S. Iwamoto, and Y. Arakawa, “Single quantum dot-photonic crystal nanocavity laser”, 3rd International Conference on Photonics 2012, L-D2-AM2-4, Penang, Malaysia, October 2012.
- (Invited) S. Iwamoto, “Information-Processing Photonics for Yottabyte-Scale Information Era ~Necessity for Developments and its Technology Roadmap~”, INTERNATIONAL SYMPOSIUM ON OPTICAL MEMORY 2012, Mo-E-03, Tokyo, Japan, October 2012. (2012).
- M. Arita, S. Kako, S. Iwamoto, Y. Arakawa, “Fabrication of AlGaN two-dimensional photonic crystal nanocavities by selective thermal decomposition of GaN”, International Workshop on Nitride Semiconductors 2012, TuP-OD-34, p.261, Sapporo, Japan, October 2012.
- (Invited) S. Iwamoto, M. Nomura, A. Tandaechanurat, D. Cao, and Y. Arakawa, “2D and 3D Photonic Crystal Nanocavity Lasers with Quantum Dot Gain”, IEEE PHOTONICS CONFERENCE 2012 (IPC 2012), Burlingame, CA, USA, September 2012.
- Y. H. Hsiao, S. Iwamoto, and Y. Arakawa, “Design of silicon photonic crystal waveguides for high gain Raman amplification using two symmetric TE-like slow-light modes”, 2012 International Conference on Solid State Devices and Materials, 534-535, Kyoto Japan, September 2012.
- R. Ohta, Y. Ota, H. Takagi, N. Kumagai, K. Tanabe, S. Ishida, S. Iwamoto and Y. Arakawa, “Electro-mechanical control of Q factor of photonic crystal nanobeam cavities”, 2012 International Conference on Solid State Devices and Materials, A-5-3, Kyoto Japan, September 2012.
- Y. Ota, K. Watanabe, S. Iwamoto and Y. Arakawa, “Intra-cavity frequency doubling in photonic crystal nanocavity quantum dot lasers”, 2012 IEEE Photonics Conference, WW 3, California, USA, September 2012.
- N. Kumagai, S. Ohkouchi, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Rim structures on non-elongated InAs quantum dots grown by partial cap and annealing process at low temperature”, The 17th International Conference on Molecular Beam Epitaxy (MBE2012), Tup-34, Nara, Japan, September 2012.
- S. Ohkouchi, N. Kumagai, K. Watanabe, S. Iwamoto, and Y. Arakawa, “Shape evolution of low density InAs quantum dots in the partial capping process by using As2 source”, 17th International Conference on Molecular Beam Epitaxy (MBE 2012), TuA3-2, Nara, Japan, September 2012.
- J Kwoen, K. Watanabe, S. Iwamoto, Y. Arakawa, “Non-VLS growth of GaAs nanowire by a Ga pre-deposition technique”, The 17th International Conference on Molecular Beam Epitaxy, (MBE 2012), WeA-2-6, Nara Prefectural New Public Hall, Nara, Japan, September 2012.
- E. Harbord, Y. Ota, M. Shirane, Y. Igarashi, N. Kumagai, S. Ohkouchi, S.Iwamoto, S. Yorozu, Y. Arakawa, “Spin pumping InAs/GaAs QDs: controlling linear and circular polarization”, 2012 International Conference on Solid State Devices and Materials, K-8-2, Kyoto Japan, September 2012.
- M. Nomura, S. Iwamoto, and Y. Arakawa, “Quantum dot-photonic crystal nanocavity laser”, DYCE International Workshop, Thu-6, Hokkaido, Japan, August 2012.
- A. Enderlin, Y. Ota R. Ohta, N. Kumagai, S. Ishida S. Iwamoto, Y. Arakawa, “Efficient Light Extraction from a Quantum Dot in a Photonic Crystal Nanobeam Cavity through a Waveguide”, 10th International Symposium on Photonic and Electromagnetic Crystal Structures,PECS-X-013,Santa Fe, New Mexico, USA, June 2012.
- H. Takagi, Y. Ota, K. Watanabe, S. Ishida, S. Iwamoto, Y. Arakawa, “Optical Stark Shift of a Quantum Dot in a Nanocavity: Towards Attojoule Switching in the Telecom Band”, PECS-X, 0121, Santa Fe, USA, June 2012.
- S. Sergent, M. Arita, S. Kako, S. Iwamoto, and Y. Arakawa, “UV-Range High-Q (Q > 5000) AlN Photonic Crystal Nanobeam Cavities Embedding GaN Quantum Dots”, 10th International Symposium on Photonic and Electromagnetic Crystal Structures,PECS-X-013, pp 258-259, Santa Fe, New Mexico, USA, June 2012.
- J. Tatebayashi, D. Karunathillake, Y. Ota, S. Ishida, M. Nishioka, S. Iwamoto, and Y. Arakawa, “Formation and optical properties of multi-stack InAs/GaAs quantum dots embedded in GaAs nanowires grown by selective metalorganic chemical vapor deposition”, 16th International Conference on Metal Organic Vapor Phase Epitaxy, MoB3-2 , Busan, Korea, May 2012.
- H. Takagi, Y. Ota, N. Kumagai, S. Ishida, S. Iwamoto, Y. Arakawa, “Nanocavity-enhanced Optical Stark Shift in a Single Quantum Dot under Extremely Low Excitation Power”, CLEO 2012, QTu3D.5, San Jose, USA, May 2012.
- J. Tatebayashi, Y. Ota, D. Karunathillake, S. Ishida, M. Nishioka, S. Iwamoto, and Y. Arakawa, “Site-controlled InAs/GaAs quantum-dot-in-nanowires for non-classical photon emitters”, 7th International Conference on Quantum Dots (QD 2012), 10-3, Santa Fe, USA, May 2012.
- J. Tatebayashi, Y. Ota, S. Ishida, M. Nishioka, S. Iwamoto and Y. Arakawa, “Formation and optical properties of multi-stack InAs/GaAs quantum dots embedded in GaAs nanowires grown by selective metalorganic chemical vapor deposition”, 2012 Materials Research Society Spring Meeting, AA11.2. San Francisco, USA, April 2012.
- A. Tandaechanurat, N. Hauke, T. Zabel, T. Reichert, H. Takagi, M. Kaniber, S. Iwamoto, D. Bougeard, J. J. Finley, G. Abstreiter, and Y. Arakawa , “Silicon-based three-dimensional photonic crystal with enhanced spontaneous emission”, SPIE Photonics West 2012 Conference, 8266-28, California, USA, January 2012.
- (Invited) Y. Ota, S. Iwamoto, N. Kumagai and Y. Arakawa, “Spontaneous two photon emission from a single quantum dot coupled to photonic crystal nanocavity”, SPIE Photonics West 2012 Conference, 8266-28, California, USA, January 2012.

#### 2011

- S. Nakayama, S. Iwamoto, S. Kako, S. Ishida and Y. Arakawa, ”Silicon LED with one-dimensional photonic crystal nanocavity”, 1st International Symposium on Photonics and Electronics Convergence -Advanced Nanophotonics and Silicon Device Systems (ISPEC 2011) P-44, the University of Tokyo, Tokyo, November 2011.
- (Invited) S. Iwamoto and Y. Arakawa, “Enhanced light emission from silicon with photonic nanostructures”, International Photonics and OptoElectronics Meetings, Wuhan, China, November 2011.
- S. Iwamoto, S. Nakayama, S. Ishida, and Y. Arakawa, “Enhancement of Light Emission from Silicon by Photonic Crystals Structures”, The 1st International Symposium on Photonics and Electronics Convergence, E-2, Tokyo, Japan, November 2011.
- D. S. Cao, A. Tandaechanurat, S. Nakayama, N. Hauke, T. Zabel, S. Ishida, S. Iwamoto, J. J. Finley, G. Abstreiter, and Y. Arakawa, “Fabrication of High-Q (~22,000) Silicon-Based Three-Dimensional Photonic Crystal Nanocavity and its Lasing Oscillation with InAs Quantum-Dot Gain”, The 1st international symposium on photonics and electronics convergence advanced nanophotonics and silicon device systems, Tokyo, November 2011.
- N. Kumagai, S. Ohkouchi, K. Watanabe, S. Iwamoto, and Y. Arakawa, “MBE growth of high quality InAs quantum dots for applications in quantum information technology”,1st Annual World Congress of Nano-S&T, Track 2-5, Molecular Nanoelectronic Devices, 274, Dalian, China, October 2011.
- Y. Ota, S. Iwamoto, N. Kumagai, Y. Arakawa, “Enhanced spontaneous two photon emission from a single quantum dot in a photonic crystal nanocavity”, The 3rd Japan-German Woqkshop on Quantum Dot Nanolasers, B-3, Tokyo, October 2011.
- T. Nakaoka, Y. Tamura,T. Miyazawa,K. Watanabe,Y. Ota,S. Iwamoto,Y. Arakawa, “Wavelength tunable single-photon source with a side gate”, 2011 International Conference on Solid State Devices and Materials (SSDM 2011), J-6-4, Nagoya, , September 2011.
- D. S. Cao, A. Tandaechanurat, S. Nakayama, N. Hauke, T. Zabel, S. Ishid, S. Iwamoto, J. J. Finley, G. Abstreiter, and Y. Arakawa, “Fabrication of High-Q Silicon-Based Three-Dimensional Photonic Crystal Nanocavity and its Lasing Oscillation with InAs Quantum-Dot Gain”, the 8th international confernce on Group IV photonic, London, UK, September 2011.
- J. K. Kwoen, N. Kumagai, K. Watanabe, S. Ohkouchi, S. Iwamoto, and Y. Arakawa, “Suppression of surface nanocrystal nucleation in growth of GaAs nanowire on Si(111) by molecular beam epitaxy”, 2011 International Conference on Solid State Devices and Materials(SSDM 2011), P-13-6, Nagoya, Japan, September 2011.
- S. Nakayama, S. Iwamoto, S. Kako, S. Ishida and Y. Arakawa, “Demonstration of silicon nanocavity LED with enhanced luminescence”, 2012 International conference on Solid State Devices and Materials (SSDM 2011) I-8-2, Nagoya, Japan, September 2011.
- H. Takagi, Y. Ota, S. Iwamoto, Y. Arakawa, “Proposal of method for coherent single-photon generation from coupled quantum dot-nanocavity systems with single excitation laser”, International Nano-Optoelectronics Workshop, Poser Session3, P12, St. Petersburg, Russia and Wuerzburg, Germany, August 2011.
- K. Tanabe, S. Iwamoto and Y. Arakawa, “Proposal and design of III-V/Si hybrid lasers with current injection across conductive wafer-bonded heterointerfaces”, 9th Pacific Rim Conference on Lasers and Electro-Optics (CLEO Pacific Rim), 2220-CT-1, Sydney, Australia, August 2011.
- (Invited) Y. Arakawa, A. Tandaechanurat, and S. Iwamoto, “Quantum dot and high-Q 3D photonic crystal nanocavity coupled system for manipulating exciton-photon interaction” SPIE Optics + Photonics 2011, 8095-33, California, USA, August 2011.
- A. Tandaechanurat, Y. Ota, N. Kumagai, S. Ishida, S. Iwamoto, and Y. Arakawa, “Observation of Purcell effect in a 3D photonic crystal nanocavity with a single quantum dot”, The 2011 IQEC/CLEO Pacific Rim Conference (IQEC/CLEO PR 2011), 967, Sydney, Australia, August 2011.
- R. Ohta, Y. Ota, M. Nomura, N. Kumagai, S. Ishida, S. Iwamoto, and Y. Arakawa, “Fabrication of high-Q photonic crystal nanobeam cavities and demonstration of strong coupling with a single quantum dot”, 2011 Internal Nano Optoelectronics Workshop , July 2011.
- S. Sergent, M. Arita, S. Kako, S. Iwamoto, and Y. Arakawa, “Design and fabrication of group-III nitride 1D photonic crystal nanobeam cavities” 9th International Conference on Nitride Semiconductors, C4.5, Glasgow, United Kingdom, July 2011.
- Y. Ota, S. Iwamoto, N. Kumagai, Y. Arakawa, “Observation of spontaneous two photon emission from a single quantum dot in a high Q photonic crystal nanocavity”, The 15th conference on Modulated Semiconductor Structures (MSS15), Tu-3 6, Florida, USA , July 2011.
- (Invited) Y. Arakawa, S. Iwamoto, M. Nomura, A. Tandaechanurat, Y. Ota, “Semiconductor Nanophotonics based on Cavity QED”, Utokyo-Shinhua Pekin, China , June 2011.
- Y. Arakawa, Y. Ota, M. Nomura, A. Tandaechanurat, and S. Iwamoto(Invited), “Lasing oscillation in quantum dots and photonic crystal nanocavity coupled systems”, 38th International Symposium on Compound Semiconductors Berlin, Germany, May 2011.
- K. Konishi, M. Kuwata-Gonokami, M. Nomura, N. Kumagai, S. Iwamoto and Y. Arakawa, “Circularly-Polarized Photoluminescence from Semiconductor Chiral Photonic Nanostructures”, NANOMETA2011, Tirol, Austria, January 2011.

#### 2010

- Y. Ota, R. Ohta, N. Kumagai, S. Ohkouchi, S. Ishida, M. Shirane, Y. Igarashi, M. Nomura, S. Iwamoto, S. Yorozu and Y. Arakawa, “Vacuum Rabi Splitting with Single Quantum Dot in 1D and 2D Photonic Crystal Nanocavities”, University of Wurzburg – University of Tokyo Joint Workshop on Advances in Nanophotonics and Spintronics, Wurzburg, Germany, October 2010.
- S. Iwamoto, S. Nakayama. S. Ishida, and Y. Arakawa, “Enhanced Light Emission from Silicon with Photonic Crystal Structures”, Joint Workshop on Advances in Nanophotonics and Spintronics, 2-3, Wurzburg, Germany, October 2010.
- M. Nomura, Y. Ota, N. Kumagai, S. Iwamoto, and Y. Arakawa, “Lasing in a strongly coupled single quantum dot-nanocavity system and going one step further”, Joint Workshop on Advances in Nanophotonics and Spintronics, 2-3, Wurzburg, Germany, October 2010.
- Y. Ota, R. Ohta, N. Kumagai, S. Ohkouchi, S. Ishida, M. Shirane, Y. Igarashi, M. Nomura, S. Iwamoto, S. Yorozu and Y. Arakawa, “Vacuum Rabi Splitting with Single Quantum Dot in 1D and 2D Photonic Crystal Nanocavities”, University of Wurzburg – University of Tokyo Joint Workshop on Advances in Nanophotonics and Spintronics, Wurzburg, Germany, October 2010.
- S. Nakayama, S. Iwamoto, S. Ishida and Y. Arakawa, “Demonstration of a silicon photonic crystal slab LED with efficient electroluminescence”, Solid State Devices and Materials (SSDM) [Oral] D-4-3 (2010) Tokyo, Japan, September 2010.
- S. Nakayama, S. Iwamoto, S. Ishida and Y. Arakawa, “Enhanced electroluminescence of silicon by utilizing photonic crystal structures”, Photonic and Electromagnetic Crystal Structures (PECS) [Poster] 163 (2010) Granada, Spain, September 2010.
- A. Tandaechanurat, S. Ishida, D. Guimard, M. Nomura, S. Iwamoto, and Y. Arakawa, “Continuous-Wave Lasing in a Three-Dimensional Photonic Crystal Nanocavity with Quantum Dots”, Ninth International Conference on Photonic and Electromagnetic Crystal Structures (PECS IX), 154, Granada, Spain, September 2010.
- K. Tanabe, M. Nishioka, D. Guimard, S. Iwamoto, Y. Arakawa, “Direct-bonded AlGaAs/Si hybrid dual-junction solar cells”, 5th World Conference on Photovoltaic Energy Conversion (WCPEC-5) ,1DV.3.100, Valencia,Spain, September 2010.
- (Invited) M. Nomura, Y. Ota, N. Kumagai, S. Iwamoto, and Y. Arakawa, “Ultrasmall zero-cell photonic crystal nanocavity laser with quantum dot gain”, 9th International Conference on Photonic and Electromagnetic Crystal Structures, I-9, Granada, Spain, September 2010.
- Y. Ota, N. Kumagai, S. Ohkouchi, S. Ishida, M. Shirane, Y. Igarashi, M. Nomura, S. Iwamoto, S. Yorozu and Y. Arakawa, “Strong Coupling between a Single Quantum Dot and a Photonic Crystal Heterostructure Cavity”, Photonic and Electromagnetic Crystal Structures Ⅸ, 126, Granada, Spain, September 2010.
- R. Ohta, Y. Ota, M. Nomura, N. Kumagai,S. Ishida, S. Iwamoto, and Y. Arakawa, “Demonstration of the strong coupling in a quantum dot-nanobeam cavity system”, 9th International Conference on Photonic and Electromagnetic Crystal Structures, Granada, Spain, September 2010.
- Y. Igarashi, M. Shirane, Y. Ota, M. Nomura, N. Kumagai, S. Ohkouchi, A. Kirihara, S. Ishida, S. Iwamoto, S. Yorozu, and Y. Arakawa, “Spin-relaxation Dynamics of Excited Trion States in an InAs Quantum Dot”, International Conference on Solid State Devices and Materials, F-3-2, the University of Tokyo (Hongo Campus), Tokyo, Japan, September 2010.
- S. Ohkouchi, N. Kumagai, M. Shirane, Y. Igarashi, M. Nomura, Y. Ota, S. Yorozu, S. Iwamoto, and Y. Arakawa, “New Method to Isolate and Distribute Photoluminescence Emissions from InAs Quantum Dots over a Wide-Wavelength Range”, 16th International Conference on Molecular Beam Epitaxy (MBE 2010), P1-34, Berlin, Germany, August 2010.
- S. Nakayama, S. Iwamoto, S. Ishida and Y. Arakawa, “Efficient silicon LED by utilizing photonic crystal structures”, 2010 International Nano-Optoelectronics Workshop (iNOW) [Poster] 4-P9,Beijing and Changchun, China, August 2010.
- A. Tandaechanurat, S. Ishida, D. Guimard, D. Bordel, M. Nomura, S. Iwamoto, and Y. Arakawa, “Lasing characteristics of a quantum-dot-3D-photonic-crystal-nanocavity coupled system: Interaction between fully confined electrons and photons”, The 30th International Conference on the Physics of Semiconductors (ICPS 2010), MoA2-3, Seoul, Korea, July 2010.
- A. Tandaechanurat, S. Ishida, D. Guimard, D. Bordel, M. Nomura, S. Iwamoto, and Y. Arakawa, “Achievement of a high quality factor (~ 38,500) in three-dimensional photonic crystal microcavity for ultimate microlasers”, The 37th International Symposium on Compound Semiconductors (ISCS 2010), ThC2-2, Kagawa, Japan, June2010.
- K. Tanabe, D. Guimard, D. Bordel, S. Iwamoto, Y. Arakawa, “Fabrication of Electrically Pumped InAs/GaAs Quantum Dot Lasers on Si Substrates by Au-Mediated Wafer Bonding”, 37th International Symposium on Compound Semiconductors (ISCS),WeE3-1, Takamatsu, Japan, June 2010.
- A. Tandaechanurat, S. Ishida, D. Guimard, D. Bordel, M. Nomura, S. Iwamoto, and Y. Arakawa, “Achievement of a high quality factor (~ 38,500) in three-dimensional photonic crystal microcavity for ultimate microlasers”, The 37th International Symposium on Compound Semiconductors (ISCS 2010), ThC2-2, Kagawa, Japan, June 2010.
- K. Tanabe, D. Guimard, D. Bordel, S. Iwamoto, Y. Arakawa, “Fabrication of Electrically Pumped InAs/GaAs Quantum Dot Lasers on Si Substrates by Au-Mediated Wafer Bonding”, 37th International Symposium on Compound Semiconductors (ISCS),WeE3-1, Takamatsu, Japan, June 2010.
- (Invited) M. Nomura, S. Iwamoto, and Y. Arakawa, “Single quantum dot laser using photonic crystal nanocavity”, 22nd International Conference on Indium Phosphide and Related Materials, FrA2-4, Kagawa, Japan, June 2010.
- M. Nomura, K. Tanabe, S. Iwamoto, and Y. Arakawa, “Design of a High-Q H0 Photonic Crystal Nanocavity for cavity QED”, The 37th International Symposium on Compound Semiconductors, FrD3-6, Kagawa, Japan, June 2010.
- A. Tandaechanurat, S. Ishida, D. Guimard, D. Bordel, M. Nomura, S. Iwamoto, and Y. Arakawa, “Lasing oscillation in a three-dimensional photonic crystal nanocavity with quantum dots”, The Conference on Lasers and Electro-Optics and The Quantum Electronics and Laser Science Conference (CLEO/QELS 2010), CWK2, California, USA , May 2010.
- N. Kumagai, S. Ohkouchi, M. Shirane, Y. Igarashi, M. Nomura, Y. Ota, S. Yorozu, S. Iwamoto, and Y. Arakawa, “Effects of growth temperature of partial GaAs cap on InAs quantum dots in In-flush process for single dot spectroscopy”, The 37th International symposium on Compound Semiconductor (ISCS 2010), TuC3-3, Takamatsu, Japan, May 2010.
- (Invited) Y. Arakawa, M. Nomura, A. Tandaechanurat, S. Iwamoto, S. Ishida, N. Kumagai, “Light-matter coupling in self-assembled quantum dots with 2D/3D photonic crystal nanocavity”, Quantum Dot 2010, Nottingham, UK, April 2010.
- K. Tanabe, D. Guimard, D. Bordel, S. Iwamoto, Y. Arakawa, “Room temperature operation of 1.3 um InAs/GaAs quantum dot lasers wafer-bonded onto Si substrates”, 6th International Conference on Quantum Dots (QD 2010), P-28,Nottingham, UK, April 2010.
- (Invited) M. Nomura, S. Iwamoto, and Y. Arakawa, “Single quantum dot photonic crystal nanocavity lasers”, Frontiers in Nanoscale Science and Technology FNST 2011, Th-1, RIKEN, Saitama , Japan, January 2011.

#### 2009

- (Invited) S. Iwamoto, A. Tandaechanurat, and Y. Arakawa, 2-3D photonic crystal laser with high Q nanocavity”, The 9th Sweden- Japan Workshop on Quantum Nanophysics and Nanoelectronics (QNANO), Tokyo, Japan, December 2009.
- (Invited) Y. Arakawa, S.Iwamoto, M.Nomura, “Single artificial atom laser with photonic crystal nanocavity”, The 9th Sweden- Japan Workshop on Quantum Nanophysics and Nanoelectronics (QNANO), Tokyo, Japan, December 2009.
- Y. Ota, N. Kumagai, S. Ohkouchi, M. Shirane, M. Nomura, S. Ishida, S. Iwamoto, S. Yorozu and Y. Arakawa, “Semiconductor features in quantum-dot-based cavity quantum electrodynamics”, International Symposium on Quantum Nanophotincs and Nanoelectronics, FrE-5, Tokyo, Japan, November 2009.
- A. Tandaechanurat, S. Ishida, D. Guimard, D. Bordel, M. Nomura, S. Iwamoto, and Y. Arakawa, “Achievement of a high quality factor (>10,000) in three-dimensional photonic crystal nanocavity by defect size control”, International Symposium on Quantum Nanophotonics and Nanoelectronics , FrE-7, 107, Tokyo, Japan, November 2009.
- M. Nomura, N. Kumagai, S. Iwamoto, Y. Ota, and Y. Arakawa, “Lasing in single quantum dot-photonic crystal nanocavity coupled systems”, International Symposium on Quantum Nanophotonics and Nanoelectronics, FrF-5, Tokyo, Japan, November 2009.
- M. Kitamura, S. Iwamoto, Y. Arakawa and L. Esaki, “Shelf Life of the Esaki Tunnel Diode – Tangible Shifts in the Peak Current from the Values Measured Half a Century Ago”, International Symposium on Quantum Nanophotonics and Nanoelectronics, ThD-9, pp69, Tokyo, Japan, November 2009.
- K. Tanabe, M. Nomura, D. Guimard, S. Iwamoto, and Y. Arakawa, “Photonic Crystal Nanocavity Lasers with InAs/GaAs Quantum Dot Gain on Silicon Substrates: Room Temperature Continuous Wave Operation with Ultralow Threshold”, International Symposium on Quantum Nanophotonics and Nanoelectronics, Tokyo, Japan, November 2009.
- N. Kumagai, S. Ohkouchi, S. Nakagawa, M. Shirane, Y. Igarashi,M. Nomura, Y. Ota, S. Iwamoto, and Y. Arakawa, “InAs quantum dots grown by low temperature capping for single dot spectroscopy”, International Symposium on Quantum Nanophotonics and Nanoelectronics, WeP-16, p32,Tokyo, Japan, November 2009.
- Yuki Wakayama, Satoshi Iwamoto, Yasuhiko Arakawa, “Indirect optical modulation in mid-infrared quantum cascade lasers with coupled cavity structure”, International Symposium on Quantum Nanophotonics and Nanoelectronics、WeP-20, Tokyo, Japan, November 2009.
- A. Tandaechanurat, S. Ishida, D. Guimard, D. Bordel, M. Nomura, S. Iwamoto, and Y. Arakawa, “Demonstration of quality factor over 10,000 in three-dimensional photonic crystal nanocavity by cavity size control”, International Conference on Solid State Devices and Materials (SSDM 2009), I-1-7, 32, Sendai, Japan, October 2009.
- K. Tanabe, M. Nomura, D. Guimard, S. Iwamoto, and Y. Arakawa, “Photonic crystal nanocavity lasers with InAs quantum dots bonded onto silicon substrates”, 8th Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim), MH2-4,Shanghai , China, September 2009.
- (Invited) M. Nomura , S. Iwamoto, and Y. Arakawa, “Laser oscillation in single quantum dot-photonic crystal nanocavity coupled systems”, The 36th International Symposium on Compound Semiconductors, 8.1, University of California, Santa Barbara, September 2009.
- (Invited) Y. Arakawa, S. Iwamoto, M. Nomura and Y. Ota, “Light-matter interaction in single quantum dot with photonic crystal nanocavity”, The 8th Pacific Rim Conference on Lasers and Electro-Optics, TuH2-2, Shanghai, China, September 2009.
- Y. Ota, N. Kumagai, M. Shirane, M. Nomura, S. Ishida, S. Iwamoto, S. Yorozu and Y. Arakawa, “Observation of the Spectral Triplet in Strongly Coupled Quantum Dot-Nanocavity System”, 36th International Symposium on Compound Semiconductors, 19.6, Santa Barbara, U.S., September 2009.
- (Invited) M. Nomura , S. Iwamoto, and Y. Arakawa, “Single Quantum Dot Laser with Photonic Crystal Nanocavity”, Integrated Photonics and Nanophotonics Research and Applications, IMF3, Hawaii, USA, July 2009.
- M. Nomura, N. Kumagai, S. Iwamoto, Y. Ota, and Y. Arakawa, “Observation of unique photon statistics of single artificial atom laser”, 14th International Conference on Modulated Semiconductor Structure, M9c, Kobe, Japan, July 2009.
- K. Tanabe, M. Nomura, D. Guimard, S. Iwamoto, and Y. Arakawa, “Fabrication and optical characterization of photonic crystal nanocavities with InAs quantum dots bonded on silicon substrates”, 14th International Conference on Modulated Semiconductor Structures (MSS-14), Tu-mP35, Kobe, July 2009.
- S. Nakayama, S. Ishida, S. Iwamoto, D. Bordel, E. Augendre, L. Clavelier, ad Y. Arakawa, “Enhancement of photoluminescence from germanium by utilizing air-bridge type photonic crystal slab”, 14th International Conference on Modulated Semiconductor Structures (MSS-14), Tu-mP41, p155, Kobe, July 2009.
- N. Kumagai, S. Ohkouchi, S. Nakagawa, M. Nomura, Y. Ota, M. Shirane, Y. Igarashi, S. Yorozu, S. Iwamoto, Y. Arakawa, “Suppression of indefinite peaks in InAs/ GaAs quantum dot spectrum by low temperature Indium-flush method”, 14th International Conference on Modulated Semiconductor Structures (MSS-14), Mo-mP22, pp34, Kobe, Japan, July 2009.
- Y. Ota, M. Shirane, M. Nomura, N. Kumagai, S. Ishida, S. Iwamoto, S. Yorozu and Y. Arakawa, “Cavity quantum electrodynamics with quantum dot in H1-type photonic crystal nanocavity”, Frontiers in Nanoscale Science and Technology (FNST 2009), poster session A, Harvard University, Boston, USA , May 2009.
- (Invited) M. Nomura , N. Kumagai, S. Iwamoto, Y. Ota, and Y. Arakawa, “Photonic Crystal Nanocavity Laser with Single Quantum Dot Gain”, Conference on Lasers and Electro-Optics (CLEO) CMP1, Baltimore, USA, May 2009
- Y. Ota, M. Shirane, M. Nomura, N. Kumagai, S. Ishida, S. Iwamoto, S. Yorozu and Y. Arakawa, “Strong coupling between a single quantum dot and a H1 photonic crystal nanocavity”, Photonic and Electromagnetic Crystal Structures Ⅷ, B 136, Sydney, Australia, April 2009.
- M. Nomura, S. Iwamoto, A. Tandaechanurat, Y. Ota, N. Kumagai, and Y. Arakawa, “Quantum Dot-based Photonic Bandedge Lasers”, Photonic and Electromagnetic Crystal Structures VIII, 115, Sydney, Australia, April 2009.
- A. Tandaechanurat, S. Ishida, K. Aoki, D. Guimard, M. Nomura, S. Iwamoto, and Y. Arakawa, “Demonstration of high-Q (> 7,700) three-dimensional photonic crystal nanocavity”, The 8th International Photonic & Electromagnetic Crystal Structures Meeting (PECS VIII), 92, pp.120, Sydney, Australia, April 2009.
- (Invited) Y. Arakawa, S. Iwamoto, K. Aoki, D. Guimard, M. Nomura, T. Aniwat, Y. Ohta, “Controlled photons emitted from quantum dots with 2D and 3D photonic crystal nanocavity”, 2nd Germany /Japan Workshop“Nanolaser based Optical Sensing” , Tokyo , February 2009.

#### 2008

- M. Nomura, A. Tandaechanurat, S. Iwamoto, Y. Ota, N. Kumagai, and Y. Arakawa, “Direct Observation of Highly Efficient Coupling of Spontaneous Emission in Quantum Dot-Photonic Crystal Nanocavity Systems by Momentum Space Imaging”, IEEE Nanotechnology Materials and Devices Conference(NMDC 2008), MoC II-4, Kyoto, Japan, October 2008.
- S. Nakayama, S. Ishida, S. Iwamoto, and Y. Arakawa, “Effect of cavity mode volume on enhancement of photoluminescece from silcion photonic nanocavities”, IEEE Nanotechnology Materials and Devices Conference 2008 (NMDC 2008), Kyoto, Japan , October 2008.
- Y. Wakayama, S. Iwamoto, Y, Arakawa, “Microcylinder Quantum Cascade Lasers Coupled with Lateral Waveguides”, IEEE Nanotechnology Materials and Devices Conference(NMDC 2008), MoC I-4, pp.36, Kyoto, Japan, October 2008.
- (Invited) S. Iwamoto and Y. Arakawa, “Advances in 2D/3D photonic Crystal Nanocavities with Quantum Dots for Nanophotonic Devices”, University of Tokyo and UC Santa Barbara Joint Workshop, p.19, Santa Barbara, USA, September 2008.
- Y. Wakayama, S. Iwamoto, Y. Arakawa, “Microcylinder quantum cascade lasers coupled with lateral waveguides”, Bilateral Workshop on Nanoscale Systems, pp.60, Garching, Germany, July 2008.
- S. Nakayama, S. Ishida, S. Iwamoto, and Y. Arakawa, “Enhanced photoluminescence from silicon photonic crystal nanocavities with different sizes of mode volume”, International Nano-Optoelectronic Workshop (iNOW 2008), 2, P19, Tokyo, Japan, August 2008.
- Y. Wakayama, S. Iwamoto, Y. Arakawa, “Microcylinder Quantum Cascade Laser Coupled with an Optical Waveguide”, International Nano-Optoelectronic Workshop (iNOW 2008),Session 2, P.16, Tokyo, Japan, August 2008.
- M. Nomura, Y. Ota, N. Kumagai, S. Iwamoto, and Y. Arakawa, “Achievement of ultra-low threshold excitation power (8 nW) in a nearly-single quantum dot nanocavity laser”, Conference on Lasers and Electro-Optics, CTuW3, San Jose, USA, May 2008.
- Y. Ota, M. Nomura, N. Kumagai, K. Watanabe, S. Ishida, S. Iwamoto, M. Shirane, S. Kono, S. Yorozu and Y. Arakawa, “Efficient Excitation and Emission of Single Quantum Dot by Simultaneous Coupling to Two Different Photonic Crystal Nanocavity Modes”, CLEO/QELS 2008, CTuW2, San Jose, USA, May 2008.
- Y. Wakayama, A. Tandaechanurat, S. Iwamoto, Y. Arakawa, “Design of Photonic Crystal Microcavities for Quantum Cascade Lasers”, Todai Week at Tsinghua University, Joint Workshop on Secure-Life Photonics, Beijing, China, May 2008.
- M. Nomura, Y. Ota, N. Kumagai, S. Iwamoto, and Y. Arakawa, “Large vacuum Rabi splitting in single-assembled 1uantum dot-nanocavity system”, 8th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN 8), MoC-2, 12, Tokyo, Japan, April 2008.
- S. Iwamoto, S. Nakayama, A. Gomyo, Y. Arakawa, “Control of Spontaneous Emission of Crystalline Silicon by Utilizing Photonic Crystal Nanocavities”, 8th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN 8), TuA-3, 20, Tokyo, Japan, April 2008.
- S. Nakayama, S. Ishida, S. Iwamoto, and Y. Arakawa, “Strong photoluminescence from silicon with randomized photonic crystal pattern”, 8th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN 8), WeP-21, p.76, Tokyo, Japan, April 2008.
- Y. Ota, M. Nomura, N. Kumagai, K. Watanabe, S. Ishida, S. Iwamoto, M. Shirane, S. Kono, S. Yorozu and Y. Arakawa, “Enhanced emission and absorption of single quantum dot by coupling to two different photonic crystal nanocavity modes”, 8th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN 8), WeP-3, Tokyo, Japan, April 2008.
- H. Takagi, T. Nakaoka, K. Watanabe, N. Kumagai, S. Iwamoto, and Y. Arakawa, “Photocurrent spectroscopy of a single quantum dot at telecommunication wavelength of 1.3 mm”, Frontiers in Nanoscale Science and Technology (FNST 2008), poster40,University of Basel, Switzerland, January 2008.
- (Invited) Y. Arakawa, S. Iwamoto, M. Nomura and K. Aoki, “Controlled Light Emission from Quantum Dots with 2D and 3D Photonic Crystal”, SPIE Photonics West, OPTO: Integrated Optoelectronic Devices, January 2008.

#### 2007

- (Invited) S. Iwamoto, M. Nomura, and Y. Arakawa, “Photonic Crystal Nanocavity for Highly Efficient Lasers and Light Sources”, The 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society(LEOS 2007), MB1, 13-14, Florida, USA, October 2007.
- M. Nomura, S. Iwamoto, and Y. Arakawa, “Prerequisites of Nanocavities for Single Artificial Atom Laser”, The 34th International Symposium on Compound Semiconductors, ThC-P5, Kyoto, Japan, October 2007.
- K. Aoki, D. Guimard, M. Nishioka, M. Nomura, S. Iwamoto, and Y. Arakawa, “Three-dimensional photonic crystal nanocavity with the highest Q-factor”, The 34th International Symposium on Compound Semiconductors, ThB I-1, Kyoto, Japan, October 2007.
- (Invited) M. Nomura, S. Iwamoto, and Y. Arakawa, “Photonic crystal nanocavity lasers with quantum dots”, SPIE, Optics East 2007, 6779-15, Boston, USA, September 2007.
- S. Iwamoto, A. Gomyo, and Y. Arakawa, “Resonant photoluminescence from crystalline Si with photonic crystal nanocavity structures”, 4th International Conference on Group IV Photonics, FC-3, Tokyo, Japan, September 2007.
- A. Tandaechanurat, S. Iwamoto, M. Nomura, N. Kumagai and Y. Arakawa, “Demonstration of High-Q Photonic Crystal H1-defect Nanocavities after Closing of Photonic Bandgap”, The 7th Pacific Rim Conference On Lasers and Electro-Optics (CLEO/Pacific Rim2007), TuF4-7, Seoul, Korea, August 2007.
- Y. Ota, M. Nomura, N. Kumagai, K. Watanabe, S. Ishida, S. Iwamoto, M. Shirane, S. Kono, S. Yorozu, and Y. Arakawa, “Fabrication and characterization of photonic crystal nanocavity with degenerated cavity modes for generating entangled photon pairs using quantum dots”, The 7th Pacific Rim Conference On Lasers and Electro-Optics (CLEO/Pacific Rim2007), TuF4-6, Seoul, Korea, August 2007.
- Y. Ota, M. Nomura, N. Kumagai, K. Watanabe, S. Ishida, S. Iwamoto, M .Shirane, S. Kono, S. Yorozu, and Y. Arakawa, “Fabrication of photonic crystal nanocavity for generating entangled photon pairs using quantum dots”, International Nano-Optelectronic Workshop 2007, Poster session3 P76, Beijing, China, July 2007.
- (Invited) K. Aoki, D. Guimard, M. Nishioka, T. Katsuyama, S. Iwamoto, and Y. Arakawa, “Arrayed 3D photonic crystals for optical communication wavelengths”, 9th International Conference on Transparent Optical Networks, We.D1.4, July 1-5, Rome, Italy, July 2007.
- A. Tandaechanurat, S. Iwamoto, M. Nomura, N. Kumagai and Y. Arakawa, “ Demonstration of High-Q Photonic Crystal H1-defect Nanocavities after Closing of Photonic Bandgap”, International Nano-Optoelectronic Workshop, P55, Beijing, China , July 2007.
- Y. Wakayama, A. Tandaechanurat, S. Iwamoto, Y. Arakawa, “Design of Surface-Emitting Photonic Crystal Microcavitis for Quantum Cascade Lasers”, International Nano-Optoelectronic Workshop, P21, Beijing, Chaina, July 2007.
- M. Nomura, S. Iwamoto, N. Kumagai, and Y. Arakawa, “Ultralow threshold photonic crystal nanocavity laser”, 13th International Conference on Modulated Semiconductor Structures, p. 133, Genova, Italy, July 2007.
- H. Takagi, T. Nakaoka, K. Watanabe, N. Kumagai, S. Iwamoto, and Y. Arakawa, “Very narrow fine-structure splittings in self-assembled quantum dots investigated by photocurrent spectroscopy”, 13th International Conference on Modulated Semiconductor Structures, WE-PM68, p363, Genova, Italy, July 2007.
- S. Iwamoto, A. Gomyo, Y. Arakawa, “Enhanced photoluminescence from silicon photonic crystal nanocavities”, International Symposium on Photonic & Electromagnetic Crystal Structures (PECS) VII, A-68, Monterey, CA, USA April 2007.
- M. Nomura, S. Iwamoto, N. Kumagai, and Y. Arakawa, “Temporal coherence of a photonic crystal microcavity laser”, Photonic and Electromagnetic Crystal Structures VII, B-25, Monterey, California, USA April 2007.
- M. Arita, S. Kako, S. Iwamoto, S. Ishida, and Y. Arakawa, “A Novel Fabrication Method for III-Nitride Air-Bridge Photonic Crystals,” International Symposium on Photonic and Electromagnetic Crystal Structures (PECS07), Monterey, CA, USA, April 2007.
- (Invited) K. Aoki, S. Iwamoto, and Y. Arakawa, “Microassembly of rod-connected diamond structures at optical wavelengths,” Progress in Electromagnetics Research Symposium (PIERS2007), 3P1, Beijing, China, March 2007.

#### 2006

- N. Li, M. Arita, S. Kako, M. Kitamura, S. Iwamoto, and Y. Arakawa, “Fabrication and optical characterization of III-nitride air-bridge photonic crystal with GaN quatum dots”, The 6th International Symposium on Blue Lasers and Light Emitting Diodes (ISBLLED 2006), E1.02, p.135, Montpellier, France, May 2006.
- (Invited) K. Aoki, S. Iwamoto, and Y. Arakawa, “Fabrication of rod-connected diamond structures at optical wavelengths by micromanipulation”, ICTON 2006, Tu.C2.2, 106, Nottingham, UK, June, 2006.
- M. Nomura, S. Iwamoto, T. Yang, S. Ishida, and Y. Arakawa, “Selective excitation of a single quantum dot in a photonic crystal nanocavity by using cavity resonance”, 28th International Conference on the Physics of Semiconductors, WeA1e6, Vienna, Austria, July 2006.
- M. Nomura, S. Iwamoto, N. Kumagai, K. Watanabe, S. Ishida, and Y. Arakawa, “Photonic crystal nanocavity continuous-wave laser operation at room temperature”, International Conference on Solid State Devices and Materials, B-1-3, Yokohama, September 2006.
- M. Arita, S. Ishida, S. Kako, S. Iwamoto, and Y. Arakawa, “AlN Photonic crystal nanocavity demonstrating high quality factor (> 2400)”, International Workshop on Nitride Semiconductors 2006 (IWN2006) Tu-LN-3, TuP-LN-E3, Foucised Session -Physics and Engineering of Light Extraction-, p. 103, Kyoto, Japan, October 2006.

#### 2005

- (Invited) Y. Arakawa and S. Iwamoto, “Photonic Crystal with Quantum dots and/or MEMS”, 2004 206th Meeting on The Electrochemical Society，Honolulu, Hawaii, USA, October 2004.
- S. Iwamoto, M. Tokushima, A. Gomyo, H. Yamada, A. Higo, H. Toshiyoshi, H. Fujita, and Y. Arakawa, “Optical Switching in Photonic Crystal Waveguide Controlled by Micro Electro Mechanical System,” Pacific Rim Conference on Lasers and Electro-Optics 2005, CTuE3-4, Tokyo, Japan, July 2005.
- M. Kitamura, S. Iwamoto, and Y. Arakawa, “Enhanced light emission of an organic semiconductor based two-dimensional photonic crystal with a nanocavity,” Pacific Rim Conference on Lasers and Electro-Optics 2005, CThE1-3, Tokyo, Japan, July 2005.
- (Invited) S. Iwamoto and Y. Arakawa, “Advances in Photonic Crystals with MEMS and Quantum Dots,” 14th International Laser Physics Workshop, 1-4-5, Kyoto, Japan, July 2005.
- S. Iwamoto, M. Tokushima, A. Gomyo, H. Yamada, S. Ishida, H. Higo, H. Toshiyoshi, and Y. Arakawa, “Fabrication of MEMS-integrated photonic crystal waveguide and demonstration of its switching operation,” PECS-VI: International Symposium on Photonic and Electromagnetic Crystal Structures, Aghia Pelaghia, Crete, Greece, June 2005.
- M. Kitamura, S. Iwamoto, and Y. Arakawa, “Organic Semiconductor Based Two-Dimensional Photonic Crystal with a Single Defect,” 2005 Conference on Lasers and Electro-Optics Quantum Electronics(CLEO2005), CMEE3, Baltimore, Maryland, USA, May 2005.
- S. Balasubramanian, P. Yu, S. Iwamoto, and K. Kuroda, “Adaptive optical coherence-domain reflectometry using InGaAs quantum wells,” Conference on Lasers and Electro-Optics (CLEO2005), pp.1617- 1619, Baltimore, USA, May 2005.
- A. Higo, S. Iwamoto, M. Ishida, Y. Arakawa, H. Fujita, A. Gomyo, M. Tokushima, H. Yamada, and H. Toshiyoshi, “Design and Fabrication of MEMS Optical Modulators Integrated with PhC Waveguides,” IEEE/LEOS Int. Conf. on Optical MEMS and Their Applications, oral G4, Oulu, Finland, August 2005.
- M. Gel, S. Ishida, S. Iwamoto, Y. Arakawa, H. Fujita, “Nano Contact Formation in a Simple MEMS Device for The conductance Measurements of Nano Objects,” Conference on Micro Electro Mechanical Systems, TPb2, pp.431-434, Miami Beach, Florida USA , January 2005.
- S. Iwamoto, J. Tatebayashi, T. Fukuda, T. Nakaoka. S. Ishida, and Y. Arakawa, “1.55-micron light emission from InAs QDs embedded in a high-Q photonic crystal microcavity, “Photonic West 2005, 5733-63, San Jose, USA, January 2005.

#### 2004

- (Invited) Y. Arakawa and S. Iwamoto, “Photonic Crystal with Quantum dots and/or MEMS”, 2004 206th Meeting on The Electrochemical Society，Honolulu, Hawaii, USA, October 2004.
- M. Kitamura, S. Iwamoto, and Y. Arakawa, “Enhanced Luminance Efficiency from Organic Light-Emitting Diodes with 2D Photonic Crystal,” Int. Conf. Solid State Devices and Materials, A-4-1, p160-161, Tokyo, Japan , September 2004.
- S. Iwamoto, J. Tatebayashi, T. Fukuda, T. Nakaoka, S. Ishida, and Y. Arakawa, “Observation of light emission at ~1.5 um from InAs quantum dots in photonic crystal microcavity,” Int. Conf. Solid State Devices and Materials, H-7-4, p. 918 , Tokyo, Japan, September 2004.
- S. Kako， K. Hoshino， S. Iwamoto， S. Ishida， and Y. Arakawa , “Single dot spectroscopy of GaN/AlN self-assembled quantum dots,” 27th International Conference on the Physics of Semiconductors, F3.004,p.50, Flagstaff, USA, July 2004.
- A. Higo, S. Iwamoto, S. Ishida, H. Fujita, Y. Arakawa, H. Toshiyoshi, H. Yamada, A. Gomyo and M. Tokushima, “Micromechanical Structures for Photonic Crystal Waveguide Switches,” Asisa-Pacific Conf. on Transducers and micro-Nano Technology (APCOT 2004), Sapporo, Japan, July 2004.
- M. Kudo, T. Nakaoka, S. Iwamoto, and Y. Arakawa, “Self-Assembled InAsSb Quantum Dots Grown on GaAs Substrates by Molecular-Beam Epitaxy,” 16th International conference on InP and related materials，Kagoshima, Japan, May 2004.
- T. Ide， T. Baba， J. Tatebayashi， S. Iwamoto， T. Nakaoka and Y. Arakawa, “InAs quantum dot microdisk laser at room temperature,” Conf. Laser and Electro-Optics, no. CThB3, San Francisco, USA, May 2004.
- (Invited) Y. Arakawa and S. Iwamoto, “Photonic Crystals with Quantum Dots and/or Micro Electro-Mechanical Systems for Advanced Nanophotonic Devices,” International Symposium on Photonic and Electromagnetic Crystal Structures V (PECS-V), Th-K3, p.177, Kyoto ,Japan March 2004.
- S. Iwamoto， H. Yamada， A. Gomyo， M.Shirane， and Y. Arakawa, ”Control of light propagation and localization in a photonic crystal slab by using a micromechanical actuator,” Photonic West 2004, 5360-27, San Jose , USA, January 2004.

#### 2003

- S. Iwamoto， H. Yamada， A. Gomyo, M. Shirane，and Y. Arakawa , “Photonic Crystal Modulators Controlled by Micro Electro-Mechanical Systems -Proposal and Experiments-,” The 5th Pacific Rim Conference on Lasers and Electro-Optics, Taipei, Taiwan，December 2003.
- S. Iwamoto and Y. Arakawa, “Photonic Crystals with Advanced Micro- and Nano-Structures,” The 5th International Workshop on Future Information Processing Technology, 2-5, Miyazaki, Japan, November 2003.
- S. Iwamoto, H. Yamada, A. Gomyo, M. Shirane, and Y. Arakawa, “Photonic Crystal Slab Waveguide Controlled by a Micro-Mechanical Actuator,” 16th Annual Meeting of the IEEE lasers and Electro-Optics Society, WE3, Tuscon, Arizona, USA, October 2003.
- M. Ito, S. Iwamoto, and Y. Arakawa, “High-Q Resonant Modes in a Quasi-Three Dimensional Photonic Crystla Microcavity,” 16th Annual Meeting of the IEEE lasers and Electro-Optics Society, TuM6, Tuscon, Arizona, USA , October 2003.
- M. Ito, S. Iwamoto, and Y. Arakawa, “Enhancement of Cavity-Q in a Quasi-Three Dimensional Photonic Crystal,” International Conference on Solid State Devices and Materials 2003, F-7-4, Tokyo, Japan, October 2003.
- S. Iwamoto, J. Tatebayashi, S. Kako, S. Ishida, and Y. Arakawa, “Numerical Analysis of DFB Lasing Action in Photonic Crystals with Quantum Dots,” The 11th International Conference on Modulated Semiconductor Structures, C-3, pp.170-171, Nara, Japan, July 2003.
- M. Kudo, T. Mishima, S. Iwamoto, T. Nakaoka, and Y. Arakawa, “Long Wavelength Luminescence from GaSb Quantum Dots Grown on GaAs Substrates,” The 11th International Cnference on Modulated Semiconductor Structures, Nara, Japan, July 2003.