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Elementary events of electron transfer in a voltage-driven quantum point contact

Mihajlo Vanevic·Yuli V. Nazarov·Wolfgang Belzig
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Abstract

We show that the statistics of electron transfer in a coherent quantum point contact driven by an arbitrary time-dependent voltage is composed of elementary events of two kinds: unidirectional one-electron transfers determining the average current and bidirectional two-electron processes contributing to the noise only. This result pertains at vanishing temperature while the extended Keldysh-Green's function formalism in use also enables the systematic calculation of the higher-order current correlators at finite temperatures.

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Mihajlo Vanevic, Yuli V. Nazarov, Wolfgang Belzig. 2007-08-09. Elementary events of electron transfer in a voltage-driven quantum point contact. https://doi.org/10.1103/physrevlett.99.076601

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