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Integrated spatial multiplexing of heralded single-photon sources

Author

Listed:
  • M.J. Collins

    (Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • C. Xiong

    (Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • I.H. Rey

    (SUPA, School of Physics and Astronomy, University of St. Andrews)

  • T.D. Vo

    (Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney
    Defence Science and Technology Organisation (DSTO), P.O. Box 44, Pyrmont, New South Wales 2009, Australia)

  • J. He

    (Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • S. Shahnia

    (Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • C. Reardon

    (University of York)

  • T.F. Krauss

    (SUPA, School of Physics and Astronomy, University of St. Andrews
    University of York)

  • M.J. Steel

    (CUDOS, MQ Photonics Research Centre, Macquarie University)

  • A.S. Clark

    (Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

  • B.J. Eggleton

    (Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney)

Abstract

The non-deterministic nature of photon sources is a key limitation for single-photon quantum processors. Spatial multiplexing overcomes this by enhancing the heralded single-photon yield without enhancing the output noise. Here the intrinsic statistical limit of an individual source is surpassed by spatially multiplexing two monolithic silicon-based correlated photon pair sources in the telecommunications band, demonstrating a 62.4% increase in the heralded single-photon output without an increase in unwanted multipair generation. We further demonstrate the scalability of this scheme by multiplexing photons generated in two waveguides pumped via an integrated coupler with a 63.1% increase in the heralded photon rate. This demonstration paves the way for a scalable architecture for multiplexing many photon sources in a compact integrated platform and achieving efficient two-photon interference, required at the core of optical quantum computing and quantum communication protocols.

Suggested Citation

  • M.J. Collins & C. Xiong & I.H. Rey & T.D. Vo & J. He & S. Shahnia & C. Reardon & T.F. Krauss & M.J. Steel & A.S. Clark & B.J. Eggleton, 2013. "Integrated spatial multiplexing of heralded single-photon sources," Nature Communications, Nature, vol. 4(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3582
    DOI: 10.1038/ncomms3582
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    Cited by:

    1. Emma Lomonte & Martin A. Wolff & Fabian Beutel & Simone Ferrari & Carsten Schuck & Wolfram H. P. Pernice & Francesco Lenzini, 2021. "Single-photon detection and cryogenic reconfigurability in lithium niobate nanophotonic circuits," Nature Communications, Nature, vol. 12(1), pages 1-10, December.

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