Experiments on the direction-resolved full-counting statistics of single-electron tunneling allow testing the fundamentally important Fluctuation Theorem (FT). At the same time, the FT provides a frame for analyzing such data. Here we consider tunneling through a double quantum dot system which is coupled capacitively to a quantum point contact (QPC) detector. Fluctuations of the environment, including the shot noise of the QPC, lead to an enhancement of the effective temperature in the FT. We provide a quantitative explanation of this effect; in addition we discuss the influence of the finite detector bandwidth on the measurements.
@article{arxiv.0911.5469,
title = {Single-Electron Tunneling and the Fluctuation Theorem},
author = {Y. Utsumi and D. S. Golubev and M. Marthaler and T. Fujisawa and Gerd Schön},
journal= {arXiv preprint arXiv:0911.5469},
year = {2009}
}
Comments
Prepared for "Perspectives of Mesoscopic Physics - Dedicated to Prof. Yoseph Imry's 70th Birthday"