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Cavity-enhanced photon indistinguishability at room temperature and telecom wavelengths

Author

Listed:
  • Lukas Husel

    (Ludwig-Maximilians-Universität München)

  • Julian Trapp

    (Ludwig-Maximilians-Universität München)

  • Johannes Scherzer

    (Ludwig-Maximilians-Universität München)

  • Xiaojian Wu

    (University of Maryland)

  • Peng Wang

    (University of Maryland)

  • Jacob Fortner

    (University of Maryland)

  • Manuel Nutz

    (Qlibri GmbH)

  • Thomas Hümmer

    (Qlibri GmbH)

  • Borislav Polovnikov

    (Ludwig-Maximilians-Universität München)

  • Michael Förg

    (Qlibri GmbH)

  • David Hunger

    (Karlsruhe Institute of Technology
    Karlsruhe Institute of Technology (KIT))

  • YuHuang Wang

    (University of Maryland)

  • Alexander Högele

    (Ludwig-Maximilians-Universität München
    Munich Center for Quantum Science and Technology (MCQST))

Abstract

Indistinguishable single photons in the telecom-bandwidth of optical fibers are indispensable for long-distance quantum communication. Solid-state single photon emitters have achieved excellent performance in key benchmarks, however, the demonstration of indistinguishability at room-temperature remains a major challenge. Here, we report room-temperature photon indistinguishability at telecom wavelengths from individual nanotube defects in a fiber-based microcavity operated in the regime of incoherent good cavity-coupling. The efficiency of the coupled system outperforms spectral or temporal filtering, and the photon indistinguishability is increased by more than two orders of magnitude compared to the free-space limit. Our results highlight a promising strategy to attain optimized non-classical light sources.

Suggested Citation

  • Lukas Husel & Julian Trapp & Johannes Scherzer & Xiaojian Wu & Peng Wang & Jacob Fortner & Manuel Nutz & Thomas Hümmer & Borislav Polovnikov & Michael Förg & David Hunger & YuHuang Wang & Alexander Hö, 2024. "Cavity-enhanced photon indistinguishability at room temperature and telecom wavelengths," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48119-1
    DOI: 10.1038/s41467-024-48119-1
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    References listed on IDEAS

    as
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