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

Alex R McMillan, J Fulconis, M Halder, C Xiong, J G Rarity, William J Wadsworth

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58 Citations (SciVal)


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 single photon state was near time-bandwidth limited with a coherence length of 4 ps. Such a source is well suited to quantum information processing applications.
Original languageEnglish
Pages (from-to)6156-6165
Number of pages10
JournalOptics Express
Issue number8
Early online date31 Mar 2009
Publication statusPublished - 13 Apr 2009


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