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Information-to-work conversion by Maxwell’s demon in a superconducting circuit quantum electrodynamical system

Author

Listed:
  • Y. Masuyama

    (The University of Tokyo)

  • K. Funo

    (Peking University)

  • Y. Murashita

    (The University of Tokyo)

  • A. Noguchi

    (The University of Tokyo)

  • S. Kono

    (The University of Tokyo)

  • Y. Tabuchi

    (The University of Tokyo)

  • R. Yamazaki

    (The University of Tokyo)

  • M. Ueda

    (The University of Tokyo
    RIKEN)

  • Y. Nakamura

    (The University of Tokyo
    RIKEN)

Abstract

Information thermodynamics bridges information theory and statistical physics by connecting information content and entropy production through measurement and feedback control. Maxwell’s demon is a hypothetical character that uses information about a system to reduce its entropy. Here we realize a Maxwell’s demon acting on a superconducting quantum circuit. We implement quantum non-demolition projective measurement and feedback operation of a qubit and verify the generalized integral fluctuation theorem. We also evaluate the conversion efficiency from information gain to work in the feedback protocol. Our experiment constitutes a step toward experimental studies of quantum information thermodynamics in artificially made quantum machines.

Suggested Citation

  • Y. Masuyama & K. Funo & Y. Murashita & A. Noguchi & S. Kono & Y. Tabuchi & R. Yamazaki & M. Ueda & Y. Nakamura, 2018. "Information-to-work conversion by Maxwell’s demon in a superconducting circuit quantum electrodynamical system," Nature Communications, Nature, vol. 9(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03686-y
    DOI: 10.1038/s41467-018-03686-y
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    Cited by:

    1. Gherardini, Stefano & Buffoni, Lorenzo & Giachetti, Guido & Trombettoni, Andrea & Ruffo, Stefano, 2022. "Energy fluctuation relations and repeated quantum measurements," Chaos, Solitons & Fractals, Elsevier, vol. 156(C).
    2. Fabrizio Berritta & Torbjørn Rasmussen & Jan A. Krzywda & Joost Heijden & Federico Fedele & Saeed Fallahi & Geoffrey C. Gardner & Michael J. Manfra & Evert Nieuwenburg & Jeroen Danon & Anasua Chatterj, 2024. "Real-time two-axis control of a spin qubit," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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