Thermodynamics is an essential tool for understanding how to make an energy transformation more efficient and effective. Conventional thermodynamics, in particular, has provided us with a comprehensive understanding of thermodynamic phenomena of macroscopic systems at equilibrium. 

This research group aims to study the thermodynamics of microscopic nonequilibrium systems through the extension of thermodynamic concepts to fluctuating systems. By using statistical formalism for stochastic processes, we investigate a broad range of issues in microscopic systems including active matters and quantum systems, for example, universal trade-off relations, fundamental efficiency bounds, inference of the experimentally infeasible entropy production, etc.