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Super-radiance reveals infinite-range dipole interactions through a nanofiber

Author

Listed:
  • P. Solano

    (University of Maryland)

  • P. Barberis-Blostein

    (University of Maryland
    Universidad Nacional Autónoma de México, Ciudad Universitaria)

  • F. K. Fatemi

    (Army Research Laboratory)

  • L. A. Orozco

    (University of Maryland)

  • S. L. Rolston

    (University of Maryland)

Abstract

Atoms interact with each other through the electromagnetic field, creating collective states that can radiate faster or slower than a single atom, i.e., super- and sub-radiance. When the field is confined to one dimension it enables infinite-range atom–atom interactions. Here we present the first report of infinite-range interactions between macroscopically separated atomic dipoles mediated by an optical waveguide. We use cold 87Rb atoms in the vicinity of a single-mode optical nanofiber (ONF) that coherently exchange evanescently coupled photons through the ONF mode. In particular, we observe super-radiance of a few atoms separated by hundreds of resonant wavelengths. The same platform allows us to measure sub-radiance, a rarely observed effect, presenting a unique tool for quantum optics. This result constitutes a proof of principle for collective behavior of macroscopically delocalized atomic states, a crucial element for new proposals in quantum information and many-body physics.

Suggested Citation

  • P. Solano & P. Barberis-Blostein & F. K. Fatemi & L. A. Orozco & S. L. Rolston, 2017. "Super-radiance reveals infinite-range dipole interactions through a nanofiber," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01994-3
    DOI: 10.1038/s41467-017-01994-3
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