Fluctuation Theorem and Microreversibility in a Quantum Coherent   Conductor
  Mesoscopic systems provide us a unique experimental stage to address non-equilibrium quantum statistical physics. By using a simple tunneling model, we describe the electron exchange process via a quantum coherent conductor between two reservoirs, which yields the fluctuation theorem (FT) in mesoscopic transport. We experimentally show that such a treatment is semi-quantitatively validated in the current and noise measurement in an Aharonov-Bohm ring. The experimental proof of the microreversibility assumed in the derivation of FT is presented. 
Shuji Nakamura, Yoshiaki Yamauchi, Masayuki Hashisaka, Kensaku Chida,   Kensuke Kobayashi, Teruo Ono, Renaud Leturcq, Klaus ...
cond-mat.stat-mech cond-mat.mes-hall