Nonequilibrium thermodynamics of continuously measured quantum systems: A circuit QED implementation

P. G. Di Stefano, J. J. Alonso, E. Lutz, G. Falci, and M. Paternostro
Phys. Rev. B 98, 144514 – Published 17 October 2018

Abstract

We propose an operational framework to study the nonequilibrium thermodynamics of a quantum system S that is coupled to a detector D whose state is continuously monitored, allowing us to single out individual quantum trajectories of S. We focus on detailed fluctuation theorems and characterize the entropy production of the system. We establish fundamental differences with respect to the thermodynamics of unmonitored, unitarily evolved systems. We consider the paradigmatic example of circuit QED, where superconducting qubits can be coupled to a continuously monitored resonator and show numerical simulations using state-of-the-art experimental parameters.

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  • Received 18 April 2017
  • Revised 9 August 2018

DOI:https://doi.org/10.1103/PhysRevB.98.144514

©2018 American Physical Society

Physics Subject Headings (PhySH)

Statistical Physics & Thermodynamics

Authors & Affiliations

P. G. Di Stefano1,2, J. J. Alonso3, E. Lutz3,4, G. Falci2,5,6, and M. Paternostro1

  • 1Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, United Kingdom
  • 2Dipartimento di Fisica e Astronomia, Università di Catania, Via Santa Sofia 64, 95123 Catania, Italy
  • 3Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany
  • 4Institute for Theoretical Physics I, University of Stuttgart, D-70550 Stuttgart, Germany
  • 5CNR-IMM UOS Università (MATIS), Consiglio Nazionale delle Ricerche, Via Santa Sofia 64, 95123 Catania, Italy
  • 6Istituto Nazionale di Fisica Nucleare, Via Santa Sofia 64, 95123 Catania, Italy

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Issue

Vol. 98, Iss. 14 — 1 October 2018

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