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Nonadiabatic Electron Pumping: Maximal Current with Minimal Noise

Michael Strass·Peter Hänggi·Sigmund Kohler
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Abstract

The noise properties of pump currents through an open double quantum dot setup with non-adiabatic ac driving are investigated. Driving frequencies close to the internal resonances of the double dot-system mark the optimal working points at which the pump current assumes a maximum while its noise power possesses a remarkably low minimum. A rotating-wave approximation provides analytical expressions for the current and its noise power and allows to optimize the noise characteristics. The analytical results are compared to numerical results from a Floquet transport theory.

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Michael Strass, Peter Hänggi, Sigmund Kohler. 2005-09-22. Nonadiabatic Electron Pumping: Maximal Current with Minimal Noise. https://doi.org/10.1103/physrevlett.95.130601

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