Distinguishing quantum and classical transport through nanostructures

Details Distinguishing quantum and classical transport through nanostructures Distinguishing quantum and classical transport through nanostructures

2010-02-16

arxiv.org/abs/1002.3020v3

Phys. Rev. Lett. 105, 176801 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures. Simplified proof following Equation (2)

Scientific paper

10.1103/PhysRevLett.105.176801

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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