Report on 2210.04973v1

Abstract

We analyze the time-dependent solution of master equations by exploiting fermionic duality, a dissipative symmetry applicable to a large class of open systems describing quantum transport.Whereas previous studies mostly exploited duality relations after partially solving the evolution equations, we here systematically exploit the invariance under the fermionic duality mapping from the very beginning when setting up these equations.Moreover, we extend the resulting simplifications -so far applied to the local state evolution-to non-local observables such as transport currents.We showcase the exploitation of fermionic duality for a quantum dot with strong interaction -covering both the repulsive and attractive case-proximized by contact with a large-gap superconductor which is weakly probed by charge and heat currents into a wide-band normal-metal electrode.We derive the complete time-dependent analytical solution of this problem involving non-equilibrium Cooper pair transport, Andreev bound states and strong interaction.Additionally exploiting detailed balance we show that even for this relatively complex problem the evolution towards the stationary state can be understood analytically in terms of the stationary state of the system itself via its relation to the stationary state of a dual system with inverted Coulomb interaction, superconducting pairing and applied voltages.

Authors 3

1. Lara C. Ortmanns Aachen Institute for Theory of Statistical Physics

   RWTH Aachen University · Chalmers University of Technology

   Affiliation as printed

   Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-41296 Göteborg

   Institute for Theory of Statistical Physics, RWTH Aachen, 52056 Aachen, Germany

   JARA-FIT, 52056 Aachen, Germany

2. M. R. Wegewijs Aachen Institute for Theory of Statistical Physics

   RWTH Aachen University · Forschungszentrum Jülich

   Affiliation as printed

   Institute for Theory of Statistical Physics, RWTH Aachen, 52056 Aachen, Germany

   JARA-FIT, 52056 Aachen, Germany

   Peter Grünberg Institut, Forschungszentrum Jülich, 52425 Jülich, Germany

3. Janine Splettstoesser

   Chalmers University of Technology

   Affiliation as printed

   Department of Microtechnology and Nanoscience (MC2) , Chalmers University of Technology , SE-41296 Göteborg

   Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-41296 Göteborg