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Ultra-fast heralded single photon source based on telecom technology

  • Ngah, Lutfi Arif
  • Alibart, Olivier
  • Labonté, Laurent
  • D'Auria, Virginia
  • Tanzilli, Sébastien
Published Article
Publication Date
Dec 17, 2014
Submission Date
Dec 17, 2014
arXiv ID: 1412.5427
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The realization of an ultra-fast source of heralded single photons emitted at the wavelength of 1540 nm is reported. The presented strategy is based on state-of-the-art telecom technology, combined with off-the-shelf fiber components and waveguide non-linear stages pumped by a 10 GHz repetition rate laser. The single photons are heralded at a rate as high as 2.1 MHz with a heralding efficiency of 42%. Single photon character of the source is inferred by measuring the second-order autocorrelation function. For the highest heralding rate, a value as low as 0.023 is found. This not only proves negligible multi-photon contributions but also represents the best measured value reported to date for heralding rates in the MHz regime. These prime performances, associated with a device-like configuration, are key ingredients for both fast and secure quantum communication protocols.

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