Nonequilibrium transport through an interacting monitored quantum dot

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Authors: Daniel Werner, Matthieu Vanhoecke, Marco Schirò, Enrico Arrigoni
Cited by: 1
References: 71

Abstract

We study the interplay between strong correlations and Markovian dephasing, resulting from monitoring the charge or spin degrees of freedom of a quantum dot described by a dissipative Anderson impurity model. Using the auxiliary master equation approach, we compute the steady-state spectral function and occupation of the dot and discuss the role of dephasing on Kondo physics. Furthermore, we consider a two-lead setup that allows to compute the steady-state current and conductance. We show that the Kondo steady state is robust to moderate charge dephasing but not to spin dephasing, which we interpret in terms of dephasing-induced heating of low-energy excitations. Finally, we show universal scaling collapse of the nonlinear conductance with a dephasing-dependent Kondo scale.

Fields of Study & Subjects

Quantum and electron transport phenomena Advanced Physical and Chemical Molecular Interactions Semiconductor Quantum Structures and Devices

Publication details

Journal / source
Physical Review Research
Publisher
American Physical Society (APS)
Volume
8
Issue
1
Publication date
27 January 2026
Language
EN