Intrinsically narrowband pair photon generation in microstructured fibres

Alex S Clark, Bryn Bell, J Fulconis, Matthaeus M Halder, B Cemlyn, Olivier Alibart, C Xiong, WJ Wadsworth, John Rarity

Research output: Contribution to journalArticle (Academic Journal)peer-review

43 Citations (Scopus)


In this paper, we study the tailoring of photon spectral properties generated by four-wave mixing in a birefringent photonic crystal fibre (PCF). The aim is to produce intrinsically narrow-band photons and hence to achieve high non-classical interference visibility and generate high-fidelity entanglement without any requirement for spectral filtering, leading to high effective detection efficiencies. We show unfiltered Hong–Ou–Mandel interference visibilities of 77% between photons from the same PCF and 80% between separate sources. We compare results from modelling the PCF to these experiments and analyse photon purities.
Original languageEnglish
JournalNew Journal of Physics
Issue number6
Publication statusPublished - 20 Jun 2011

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