Work

Nonequilibrium transport through an interacting monitored quantum dot

Year: 2026

Type: article

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.

Source: Physical Review Research

DOI: 10.1103/8h9h-m7ks

Authors: Daniel Werner, Matthieu Vanhoecke, Marco Schirò, Enrico Arrigoni

Institutions: Graz University of Technology, Centre National de la Recherche Scientifique, Collège de France, Université Paris Sciences et Lettres, Jeunes équipes de l'Institut de Physique du Collège de France

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: Austrian Science Fund, H2020 European Research Council