Detection of non-Gaussian Fluctuations in a Quantum Point Contact
Mesoscale and Nanoscale Physics
2009-11-13 v2 Statistical Mechanics
Abstract
An experimental study of current fluctuations through a tunable transmission barrier, a quantum point contact, are reported. We measure the probability distribution function of transmitted charge with precision sufficient to extract the first three cumulants. To obtain the intrinsic quantities, corresponding to voltage-biased barrier, we employ a procedure that accounts for the response of the external circuit and the amplifier. The third cumulant, obtained with a high precision, is found to agree with the prediction for the statistics of transport in the non-Poissonian regime.
Cite
@article{arxiv.0710.1852,
title = {Detection of non-Gaussian Fluctuations in a Quantum Point Contact},
author = {G. Gershon and Yu. Bomze and E. V. Sukhorukov and M. Reznikov},
journal= {arXiv preprint arXiv:0710.1852},
year = {2009}
}
Comments
4 pages, 4 figures; published version