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Entanglement with negative Wigner function of almost 3,000 atoms heralded by one photon

Author

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  • Robert McConnell

    (MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, Massachusetts Institute of Technology)

  • Hao Zhang

    (MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, Massachusetts Institute of Technology)

  • Jiazhong Hu

    (MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, Massachusetts Institute of Technology)

  • Senka Ćuk

    (MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, Massachusetts Institute of Technology
    Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia)

  • Vladan Vuletić

    (MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, Massachusetts Institute of Technology)

Abstract

The detection of a single photon from a laser interacting with an atomic ensemble is shown to produce entanglement of almost 3,000 atoms; in contrast to previous production of multi-atom entanglement, the highly non-classical nature of the present entangled state is verified by measurement of a negative quasiprobability distribution.

Suggested Citation

  • Robert McConnell & Hao Zhang & Jiazhong Hu & Senka Ćuk & Vladan Vuletić, 2015. "Entanglement with negative Wigner function of almost 3,000 atoms heralded by one photon," Nature, Nature, vol. 519(7544), pages 439-442, March.
    • Handle: RePEc:nat:nature:v:519:y:2015:i:7544:d:10.1038_nature14293
    DOI: 10.1038/nature14293
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