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Real-time quantum feedback prepares and stabilizes photon number states

Author

Listed:
  • Clément Sayrin

    (Laboratoire Kastler Brossel, ENS, UPMC–Paris 6, CNRS, 24 rue Lhomond)

  • Igor Dotsenko

    (Laboratoire Kastler Brossel, ENS, UPMC–Paris 6, CNRS, 24 rue Lhomond)

  • Xingxing Zhou

    (Laboratoire Kastler Brossel, ENS, UPMC–Paris 6, CNRS, 24 rue Lhomond)

  • Bruno Peaudecerf

    (Laboratoire Kastler Brossel, ENS, UPMC–Paris 6, CNRS, 24 rue Lhomond)

  • Théo Rybarczyk

    (Laboratoire Kastler Brossel, ENS, UPMC–Paris 6, CNRS, 24 rue Lhomond)

  • Sébastien Gleyzes

    (Laboratoire Kastler Brossel, ENS, UPMC–Paris 6, CNRS, 24 rue Lhomond)

  • Pierre Rouchon

    (Centre Automatique et Systèmes, Mathématiques et Systèmes, Mines ParisTech, 60 Boulevard Saint-Michel)

  • Mazyar Mirrahimi

    (INRIA Paris-Rocquencourt, Domaine de Voluceau, BP 105)

  • Hadis Amini

    (Centre Automatique et Systèmes, Mathématiques et Systèmes, Mines ParisTech, 60 Boulevard Saint-Michel)

  • Michel Brune

    (Laboratoire Kastler Brossel, ENS, UPMC–Paris 6, CNRS, 24 rue Lhomond)

  • Jean-Michel Raimond

    (Laboratoire Kastler Brossel, ENS, UPMC–Paris 6, CNRS, 24 rue Lhomond)

  • Serge Haroche

    (Laboratoire Kastler Brossel, ENS, UPMC–Paris 6, CNRS, 24 rue Lhomond
    Collège de France, 11 place Marcelin Berthelot)

Abstract

Quantum feedback Feedback loops are central to most classical control procedures. Generalizing this approach to quantum states is complicated by the fact that sensor measurements of the output cause a random back-action on the system. Serge Haroche and colleagues overcome this problem using weak measurements, demonstrating a real-time, stabilizing quantum feedback scheme. In this system, information about the photon number is obtained from a weak quantum non-demolition measurement of the field state with Rydberg atoms crossing the cavity one by one. This represents a significant step towards the implementation of complex quantum information operations.

Suggested Citation

  • Clément Sayrin & Igor Dotsenko & Xingxing Zhou & Bruno Peaudecerf & Théo Rybarczyk & Sébastien Gleyzes & Pierre Rouchon & Mazyar Mirrahimi & Hadis Amini & Michel Brune & Jean-Michel Raimond & Serge Ha, 2011. "Real-time quantum feedback prepares and stabilizes photon number states," Nature, Nature, vol. 477(7362), pages 73-77, September.
  • Handle: RePEc:nat:nature:v:477:y:2011:i:7362:d:10.1038_nature10376
    DOI: 10.1038/nature10376
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    Cited by:

    1. Deschamps, Julien, 2015. "Continuous-time limit of repeated interactions for a system in a confining potential," Stochastic Processes and their Applications, Elsevier, vol. 125(1), pages 327-342.
    2. T. Brown & E. Doucet & D. Ristè & G. Ribeill & K. Cicak & J. Aumentado & R. Simmonds & L. Govia & A. Kamal & L. Ranzani, 2022. "Trade off-free entanglement stabilization in a superconducting qutrit-qubit system," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    3. 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.
    4. Astakhov, Sergey & Astakhov, Oleg & Fadeeva, Natalia & Astakhov, Vladimir, 2021. "Multistability, quasiperiodicity and chaos in a self-oscillating ring dynamical system with three degrees of freedom based on the van der Pol generator," Chaos, Solitons & Fractals, Elsevier, vol. 148(C).

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