Cyclostationary measurement of low-frequency odd moments of current fluctuations

Details Cyclostationary measurement of low-frequency odd moments of current fluctuations Cyclostationary measurement of low-frequency odd moments of current fluctuations

2004-07-09

arxiv.org/abs/cond-mat/0407233v1

Phys. Rev. B 71, 085316 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, 3 figures

Scientific paper

10.1103/PhysRevB.71.085316

Measurement of odd moments of current fluctuations is difficult due to strict requirements for band-pass filtering. We propose how these requirements can be overcome using cyclostationary driving of the measured signal and indicate how the measurement accuracy can be tested through the phase dependence of the moments of the fluctuations. We consider two schemes, the mixing scheme and the statistics scheme, where the current statistics can be accessed. We also address the limitations of the schemes, due to excess noise and due to the effects of the environment, and, finally, discuss the required measurement times for typical setups.

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