Narrowband high-fidelity all-fibre source of heralded single photons at 1570 nm.

  title={Narrowband high-fidelity all-fibre source of heralded single photons at 1570 nm.},
  author={A. R. McMillan and J. Fulconis and Matth{\"a}us M Halder and Chunle Xiong and John G. Rarity and William J. Wadsworth},
  journal={Optics express},
  volume={17 8},
An all-fibre heralded single photon source operating at 1570 nm has been demonstrated. The device generates correlated photon pairs, widely spaced in frequency, through four-wave mixing in a photonic crystal fibre. Separation of the pair photons and narrowband filtering is all achieved in fibre. The output heralded single photon rate was 9.2 x 10(4) per second, with a counts-to-accidentals ratio of 10.4 and a heralding fidelity of 52 %. Furthermore, narrowband filtering ensured that the output… CONTINUE READING
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