Nonadiabatic Electron Pumping: Maximal Current with Minimal Noise
Mesoscale and Nanoscale Physics
2007-05-23 v2
Abstract
The noise properties of pump currents through an open double quantum dot setup with non-adiabatic ac driving are investigated. Driving frequencies close to the internal resonances of the double dot-system mark the optimal working points at which the pump current assumes a maximum while its noise power possesses a remarkably low minimum. A rotating-wave approximation provides analytical expressions for the current and its noise power and allows to optimize the noise characteristics. The analytical results are compared to numerical results from a Floquet transport theory.
Cite
@article{arxiv.cond-mat/0505079,
title = {Nonadiabatic Electron Pumping: Maximal Current with Minimal Noise},
author = {Michael Strass and Peter Hänggi and Sigmund Kohler},
journal= {arXiv preprint arXiv:cond-mat/0505079},
year = {2007}
}
Comments
4 pages, 3 figures, replaced Fig. 1, added new inset in Fig. 2, extended paragraph on symmetry considerations