Decoherence and Full Counting Statistics in a Mach-Zehnder Interferometer

Details Decoherence and Full Counting Statistics in a Mach-Zehnder Interferometer Decoherence and Full Counting Statistics in a Mach-Zehnder Interferometer

2005-02-16

arxiv.org/abs/cond-mat/0502400v1

Phys. Rev. B 72, 075301 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 6 figures

Scientific paper

10.1103/PhysRevB.72.075301

We investigate the Full Counting Statistics of an electrical Mach-Zehnder interferometer penetrated by an Aharonov-Bohm flux, and in the presence of a classical fluctuating potential. Of interest is the suppression of the Aharonov-Bohm oscillations in the distribution function of the transmitted charge. For a Gaussian fluctuating field we calculate the first three cumulants. The fluctuating potential causes a modulation of the conductance leading in the third cumulant to a term cubic in voltage and to a contribution correlating modulation of current and noise. In the high voltage regime we present an approximation of the generating function.

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