On the detection of the finite frequency current fluctuations
Mesoscale and Nanoscale Physics
2008-03-04 v1 Statistical Mechanics
Abstract
We consider a measurement of finite-frequency current fluctuations, using a resonance circuit as a model for the detector. We arrive at an expression for the measurable response in terms of the current-current correlators which differs from the standard (symmetrized) formula. The possibility of detection of vacuum fluctuations is discussed.
Cite
@article{arxiv.0803.0020,
title = {On the detection of the finite frequency current fluctuations},
author = {G. B. Lesovik and R. Loosen},
journal= {arXiv preprint arXiv:0803.0020},
year = {2008}
}
Comments
It is shown that zero-point fluctuations of current at a given frequency are not measurable in a natural set-up. Asymmetric spectral density of noise introduced