Spectrally pure single photons at telecommunications wavelengths using commercial birefringent optical fiber

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...

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Published inOptics express Vol. 28; no. 4; pp. 5147 - 5163
Main Authors Lugani, Jasleen, Francis-Jones, Robert J A, Boutari, Joelle, Walmsley, Ian A
Format Journal Article
LanguageEnglish
Published United States 17.02.2020
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Summary: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.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.383704