A Quantum Measurement Engine and the Demon's Arrow of Time

ORAL

Abstract

We discuss a quantum measurement engine, powered by dichotomous quantum weak measurements on a single qubit weakly coupled to a thermal reservoir, and feedback controlled by a quantum Maxwell's demon. For a demon acquiring information via quantum weak measurements, we find that the work extracted can be associated with the demon's quantum measurement arrow of time. We also discuss a realistic time-continuous operation of the engine where the measurement and feedback operations are time-continuous. In addition, we show that the engine approaches a steady state for long enough time where it operates with finite efficiency.

*This work was supported by the John Templeton Foundation, Grant No. 61835.

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Presenters

  • KAGAN YANIK

    • University of Rochester

Authors

  • KAGAN YANIK

    • University of Rochester

  • Sreenath K Manikandan

    • Nordita, KTH Royal Institute of Technology and Stockholm University
    • University of Rochester

  • Andrew N Jordan

    • Chapman University
    • University of Rochester
    • Institute for Quantum Studies

  • Bibek Bhandari

    • Department of Physics and Astronomy, University of Rochester
    • University of Rochester