Single-Electron Tunneling and the Fluctuation Theorem

Y. Utsumi; D. S. Golubev; M. Marthaler; T. Fujisawa; Gerd Schön

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arXiv · 0911.5469

Single-Electron Tunneling and the Fluctuation Theorem

Y. Utsumi·D. S. Golubev·M. Marthaler·T. Fujisawa·Gerd Schön

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Abstract

Experiments on the direction-resolved full-counting statistics of single-electron tunneling allow testing the fundamentally important Fluctuation Theorem (FT). At the same time, the FT provides a frame for analyzing such data. Here we consider tunneling through a double quantum dot system which is coupled capacitively to a quantum point contact (QPC) detector. Fluctuations of the environment, including the shot noise of the QPC, lead to an enhancement of the effective temperature in the FT. We provide a quantitative explanation of this effect; in addition we discuss the influence of the finite detector bandwidth on the measurements.

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Y. Utsumi, D. S. Golubev, M. Marthaler, T. Fujisawa, Gerd Schön. 2009-11-29. Single-Electron Tunneling and the Fluctuation Theorem. https://arxiv.org/abs/0911.5469

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