Distinguishing Quantum and Classical Transport through Nanostructures

Neill Lambert, Clive Emary, Yueh-Nan Chen, and Franco Nori
Phys. Rev. Lett. 105, 176801 – Published 18 October 2010

Abstract

We consider the question of how to distinguish quantum from classical transport through nanostructures. To address this issue we have derived two inequalities for temporal correlations in nonequilibrium transport in nanostructures weakly coupled to leads. The first inequality concerns local charge measurements and is of general validity; the second concerns the current flow through the device and is relevant for double quantum dots. Violation of either of these inequalities indicates that physics beyond that of a classical Markovian model is occurring in the nanostructure.

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  • Received 26 February 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.176801

© 2010 The American Physical Society

Authors & Affiliations

Neill Lambert1, Clive Emary2, Yueh-Nan Chen3, and Franco Nori1,4

  • 1Advanced Science Institute, The Institute of Physical and Chemical Research (RIKEN), Saitama 351-0198, Japan
  • 2Institut für Theoretische Physik, Technische Universität Berlin, D-10623 Berlin, Germany
  • 3Department of Physics and National Center for Theoretical Sciences, National Cheng-Kung University, Tainan 701, Taiwan
  • 4Physics Department, University of Michigan, Ann Arbor, Michigan, 48109, USA

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Issue

Vol. 105, Iss. 17 — 22 October 2010

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