Shot noise in non-adiabatically driven nanoscale conductors

Authors


  • This article is dedicated to Hermann Grabert on the occasion of his 60th birthday.

Abstract

We investigate the noise properties of pump currents through molecular wires and coupled quantum dots. As a model we employ a two-level system that is connected to electron reservoirs and is non-adiabatically driven. Concerning the electron-electron interaction, we focus on two limits: non-interacting electrons and strong Coulomb repulsion. While the former case is treated within a Floquet scattering formalism, we derive for the latter case a master equation formalism for the computation of the current and the zero-frequency noise. For a pump operated close to internal resonances, the differences between the non-interacting and the strongly interacting limit turn out to be surprisingly small.

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