Control of Light-Matter Interactions using Photonic Nanostructures
The optical responses of a substance depend on the radiation field (electromagnetic field) environment in which it is placed. Therefore, by artificially controlling the radiation field with the photonic nanostructure, it becomes possible to control the optical response of the substance. Consequently, it can be expected to improve the efficiency of photonic devices or to realize novel optical responses and their applications to photonic devices. Using photonic crystals and nanocavityies embedding light-emitting materials such as quantum dots, we are trying to control the light emission characteristics and to apply it to efficient light-emitting devices such as nanocavity lasers. We also exploring the fundamental physic of cavity quantum electrodynamics in those systems and the possibility of quantum optics devices based on the physics. We are also interested in controlling the angular momentum of light using photonic nanostructures and in physics and applications of spin-orbit interaction of light.