Controlling Quantum Transport via Dissipation Engineering

François Damanet, Eduardo Mascarenhas, David Pekker, and Andrew J. Daley
Phys. Rev. Lett. 123, 180402 – Published 31 October 2019
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Abstract

Inspired by the microscopic control over dissipative processes in quantum optics and cold atoms, we develop an open-system framework to study dissipative control of transport in strongly interacting fermionic systems, relevant for both solid-state and cold-atom experiments. We show how subgap currents exhibiting multiple Andreev reflections—the stimulated transport of electrons in the presence of Cooper pairs—can be controlled via engineering of superconducting leads or superfluid atomic gases. Our approach incorporates dissipation within the channel, which is naturally occurring and can be engineered in cold gas experiments. This opens opportunities for engineering many phenomena with transport in strongly interacting systems. As examples, we consider particle loss and dephasing, and note different behavior for currents with different microscopic origin. We also show how to induce nonreciprocal electron and Cooper-pair currents.

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  • Received 18 April 2019

DOI:https://doi.org/10.1103/PhysRevLett.123.180402

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

François Damanet1,*, Eduardo Mascarenhas1, David Pekker2,3, and Andrew J. Daley1

  • 1Department of Physics and SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom
  • 2Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
  • 3Pittsburgh Quantum Institute, Pittsburgh, Pennsylvania 15260, USA

  • *Corresponding author. francois.damanet@strath.ac.uk

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Issue

Vol. 123, Iss. 18 — 1 November 2019

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