Noise through quantum pumps

M. L. Polianski, M. G. Vavilov, and P. W. Brouwer
Phys. Rev. B 65, 245314 – Published 13 June 2002
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Abstract

We study the current noise through an unbiased quantum electron pump and its mesoscopic fluctuations for arbitrary temperatures and beyond the bilinear response. In the bilinear regime, we find the full distributions of the noise power and the current-to-noise ratio for chaotic quantum dots with single-channel and many-channel ballistic point contacts. For a dot with many-channel point contacts we also calculate the ensemble-averaged noise at arbitrary temperature and pumping strength. In the limit of strong pumping, a new temperature scale appears that corresponds to the broadening of the electron distribution function in the dot as a result of the time-dependent perturbations.

  • Received 14 February 2002

DOI:https://doi.org/10.1103/PhysRevB.65.245314

©2002 American Physical Society

Authors & Affiliations

M. L. Polianski1, M. G. Vavilov1,2, and P. W. Brouwer1

  • 1Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853
  • 2Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455

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Vol. 65, Iss. 24 — 15 June 2002

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