Nonequilibrium dephasing in Coulomb blockade quantum dots

TL;DR

This paper develops a theoretical framework to understand zero-bias anomalies and dephasing in Coulomb-blockaded quantum dots under non-equilibrium conditions caused by biased leads, linking results to voltage fluctuation statistics.

Contribution

It introduces a novel theory connecting non-equilibrium dephasing and zero-bias anomalies in quantum dots with voltage fluctuation statistics.

Findings

Describes zero-bias anomalies in Coulomb blockade quantum dots out of equilibrium.

Provides a quantitative relation between dephasing rates and voltage fluctuations.

Offers insights into non-equilibrium dephasing mechanisms in quantum dot systems.

Abstract

We present a theory of zero-bias anomalies and dephasing rates for a Coulomb-blockaded quantum dot, driven out of equilibrium by coupling to voltage biased source and drain leads. We interpret our results in terms of the statistics of voltage fluctuations in the system.