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Experimental realization of quantum zeno dynamics

Author

Listed:
  • F. Schäfer

    (LENS—Università di Firenze
    Dipartimento di Fisica ed Astronomia)

  • I. Herrera

    (LENS—Università di Firenze)

  • S. Cherukattil

    (LENS—Università di Firenze)

  • C. Lovecchio

    (LENS—Università di Firenze)

  • F.S. Cataliotti

    (LENS—Università di Firenze
    Dipartimento di Fisica ed Astronomia
    QSTAR)

  • F. Caruso

    (LENS—Università di Firenze
    Dipartimento di Fisica ed Astronomia
    QSTAR)

  • A. Smerzi

    (LENS—Università di Firenze
    QSTAR
    Istituto Nazionale di Ottica, INO-CNR)

Abstract

It is generally impossible to probe a quantum system without disturbing it. However, it is possible to exploit the back action of quantum measurements and strong couplings to tailor and protect the coherent evolution of a quantum system. This is a profound and counterintuitive phenomenon known as quantum Zeno dynamics. Here we demonstrate quantum Zeno dynamics with a rubidium Bose–Einstein condensate in a five-level Hilbert space. We harness measurements and strong couplings to dynamically disconnect different groups of quantum states and constrain the atoms to coherently evolve inside a two-level subregion. In parallel to the foundational importance due to the realization of a dynamical superselection rule and the theory of quantum measurements, this is an important step forward in protecting and controlling quantum dynamics and, broadly speaking, quantum information processing.

Suggested Citation

  • F. Schäfer & I. Herrera & S. Cherukattil & C. Lovecchio & F.S. Cataliotti & F. Caruso & A. Smerzi, 2014. "Experimental realization of quantum zeno dynamics," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4194
    DOI: 10.1038/ncomms4194
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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).

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