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Frontiers in Optics

Heralded single photons using commercial birefringent optical fiber

Jasleen Lugani, Robert J. A. Francis-Jones, Joelle Boutari, Ian A. Walmsley

Published Jan 1, 2019• 0 citations
Publisher

Abstract

We report a bright and tunable heralded single photon source at telecom using four-wave-mixing in a commericial birefringent fiber. The source exhibits a purity of 85%, CAR of 100 and raw heralding efficiency of 30%.
DOI
10.1364/fio.2019.jtu4a.52

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We report a bright and tunable source of spectrally pure heralded single photons in the telecom O-Band, based on cross-polarized four wave mixing in a commercial birefringent optical fiber. The source can achieve a purity of 85%, heralding efficiency of 30% and a coincidence-to-accidentals ratio of 108. Furthermore, through the measurements of joint spectral intensities, we find that the fiber is homogeneous over at least 45 centimeters and thus can potentially realize 4 sources that can produce identical quantum states of light. This paves the way for a cost-effective fiber-optic approach to implement multi-photon quantum optics experiments.