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Fluctuation theorem for counting-statistics in electron transport through quantum junctions

Massimiliano Esposito·Upendra Harbola·Shaul Mukamel
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Abstract

We demonstrate that the probability distribution of the net number of electrons passing through a quantum system in a junction obeys a steady-state fluctuation theorem (FT) which can be tested experimentally by the full counting statistics (FCS) of electrons crossing the lead-system interface. The FCS is calculated using a many-body quantum master equation (QME) combined with a Liouville space generating function (GF) formalism. For a model of two coupled quantum dots, we show that the FT becomes valid for long binning times and provide an estimate for the finite-time deviations. We also demonstrate that the Mandel (or Fano) parameter associated with the incoming or outgoing electron transfers show subpoissonian (antibunching) statistics.

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Massimiliano Esposito, Upendra Harbola, Shaul Mukamel. 2007-02-16. Fluctuation theorem for counting-statistics in electron transport through quantum junctions. https://doi.org/10.1103/physrevb.75.155316

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