Description of Research Area

A01: Fundamental | Research Projects

A01-002  Transport Dynamics in Nonequilibrium Quantum Systems



Department of Physics, Osaka University

Research Subject

Recent advances in nanotechnology have enabled us to study nano-sized solid state devices, where quantum coherent electron transport plays a central role. By tuning the bias voltage applied to such devices, it is possible to control them from equilibrium to very far-from equilibrium in a continuous and precise way. Thus, they offer us an ideal stage to quantitatively explore nonequilibrium quantum physics. In this study, we develop methods to treat nonequilibrium dynamics emerging in these quantum devices: Our home-made current-fluctuation measurement techniques are applied to various quantum devices to precisely test and establish the fluctuation theorem in quantum regime. Our study will not only enable us to quantitatively clarify unexplored nonequilibrium quantum many-body physics, but also open up possibilities to bridge between quantum measurement theory and statistical physics.


SAITO, Keiji

Department of Physics,
Keio University


SAGAWA, Takahiro

Department of Applied Physics,
University of Tokyo

Grant-in-Aid for Scientific Research (KAKENHI) on Innovative Areas, MEXT, Japan
Synergy of Fluctuation and Structure : Quest for Universal Laws in Non-Equilibrium Systems