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Subnatural-linewidth biphotons from a Doppler-broadened hot atomic vapour cell

Author

Listed:
  • Chi Shu

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Peng Chen

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Tsz Kiu Aaron Chow

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Lingbang Zhu

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Yanhong Xiao

    (State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures, Fudan University)

  • M.M.T. Loy

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Shengwang Du

    (The Hong Kong University of Science and Technology, Clear Water Bay)

Abstract

Entangled photon pairs, termed as biphotons, have been the benchmark tool for experimental quantum optics. The quantum-network protocols based on photon–atom interfaces have stimulated a great demand for single photons with bandwidth comparable to or narrower than the atomic natural linewidth. In the past decade, laser-cooled atoms have often been used for producing such biphotons, but the apparatus is too large and complicated for engineering. Here we report the generation of subnatural-linewidth (

Suggested Citation

  • Chi Shu & Peng Chen & Tsz Kiu Aaron Chow & Lingbang Zhu & Yanhong Xiao & M.M.T. Loy & Shengwang Du, 2016. "Subnatural-linewidth biphotons from a Doppler-broadened hot atomic vapour cell," Nature Communications, Nature, vol. 7(1), pages 1-5, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12783
    DOI: 10.1038/ncomms12783
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