ERATO-SORST Quantum Computation and Information Project, funded by Japan Science and Technology (JST) Agency, conducts wide area of research related to quantum information science. We proceed our studies in collaboration with active research groups on quantum information theory and experiment in U. Tokyo, NII, NEC Labs, and other research organizations.
Our group studies electron transport through metal or semiconducting structures with critical dimensions of a few nanometers. The physics of electron transport in nanostructures is incredibly rich, and at low temperatures, quantum mechanical behavior emerges: the energy levels in the structures are quantized, just like in atoms and molecules. Our research focusses on understanding and controlling the quantum properties of structures such as superconducting rings, quantum dots, nanowires and carbon nanotubes, with possible application to quantum computing and novel electronics devices.