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  • Open Access

Nonequilibrium transport through an interacting monitored quantum dot

Daniel Werner1, Matthieu Vanhoecke2, Marco Schirò2, and Enrico Arrigoni1,*

  • *Contact author: arrigoni@tugraz.at
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Phys. Rev. Research 8, 013203 – Published 23 February, 2026

DOI: https://doi.org/10.1103/8h9h-m7ks

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.

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Phys. Rev. Research 8, 013203– Published 23 February, 2026
  • Received 1 August 2025
  • Accepted 27 January 2026
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