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Waveguide-coupled single collective excitation of atomic arrays

Author

Listed:
  • Neil V. Corzo

    (Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collège de France
    Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional – Unidad Querétaro)

  • Jérémy Raskop

    (Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collège de France)

  • Aveek Chandra

    (Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collège de France)

  • Alexandra S. Sheremet

    (Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collège de France)

  • Baptiste Gouraud

    (Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collège de France
    University of Basel)

  • Julien Laurat

    (Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collège de France)

Abstract

Considerable efforts have been recently devoted to combining ultracold atoms and nanophotonic devices1–4 to obtain not only better scalability and figures of merit than in free-space implementations, but also new paradigms for atom–photon interactions5. Dielectric waveguides offer a promising platform for such integration because they enable tight transverse confinement of the propagating light, strong photon–atom coupling in single-pass configurations and potentially long-range atom–atom interactions mediated by the guided photons. However, the preparation of non-classical quantum states in such atom–waveguide interfaces has not yet been realized. Here, by using arrays of individual caesium atoms trapped along an optical nanofibre6,7, we observe a single collective atomic excitation8,9 coupled to a nanoscale waveguide. The stored collective entangled state can be efficiently read out with an external laser pulse, leading to on-demand emission of a single photon into the guided mode. We characterize the emitted single photon via the suppression of the two-photon component and confirm the single character of the atomic excitation, which can be retrieved with an efficiency of about 25%. Our results demonstrate a capability that is essential for the emerging field of waveguide quantum electrodynamics, with applications to quantum networking, quantum nonlinear optics and quantum many-body physics10,11.

Suggested Citation

  • Neil V. Corzo & Jérémy Raskop & Aveek Chandra & Alexandra S. Sheremet & Baptiste Gouraud & Julien Laurat, 2019. "Waveguide-coupled single collective excitation of atomic arrays," Nature, Nature, vol. 566(7744), pages 359-362, February.
    • Handle: RePEc:nat:nature:v:566:y:2019:i:7744:d:10.1038_s41586-019-0902-3
    DOI: 10.1038/s41586-019-0902-3
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    Cited by:

    1. O. A. Chuikin & Ya. S. Greenberg & A. A. Shtygashev & A. G. Moiseev, 2024. "Single-photon stimulated emission in waveguide quantum electrodynamics," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 97(10), pages 1-20, October.
    2. Shankar G. Menon & Noah Glachman & Matteo Pompili & Alan Dibos & Hannes Bernien, 2024. "An integrated atom array-nanophotonic chip platform with background-free imaging," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

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