Fluctuation theorem for a double quantum dot coupled to a point-contact electrometer
Mesoscale and Nanoscale Physics
2011-08-16 v2 Statistical Mechanics
Abstract
We study single-electron transport through a double quantum dot (DQD) monitored by a capacitively coupled quantum point-contact (QPC) electrometer. We derive the full counting statistics for the coupled DQD - QPC system and obtain the joint probability distribution of the charges transferred through the DQD and the QPC consistent with the fluctuation theorem (FT). The system can be described by a master equation with tunneling rates depending of the counting fields and satisfying a generalized local detailed-balance relation. Furthermore, we derive universal relations between the non-linear corrections to the current and noise, which can be verified in experiment.
Cite
@article{arxiv.1105.3134,
title = {Fluctuation theorem for a double quantum dot coupled to a point-contact electrometer},
author = {D. S. Golubev and Y. Utsumi and M. Marthaler and Gerd Schoen},
journal= {arXiv preprint arXiv:1105.3134},
year = {2011}
}
Comments
12 pages, 3 figures. Published version