Tailored photon-pair generation in optical fibers

We experimentally control the spectral structure of photon pairs created via spontaneous four-wave mixing in microstructured fibers. By fabricating fibers with designed dispersion, one can manipulate the photons' wavelengths, joint spectrum, and, thus, entanglement. As an example, we produce ph...

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Bibliographic Details
Published inPhysical review letters Vol. 102; no. 12; p. 123603
Main Authors Cohen, Offir, Lundeen, Jeff S, Smith, Brian J, Puentes, Graciana, Mosley, Peter J, Walmsley, Ian A
Format Journal Article
LanguageEnglish
Published United States 27.03.2009
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Summary:We experimentally control the spectral structure of photon pairs created via spontaneous four-wave mixing in microstructured fibers. By fabricating fibers with designed dispersion, one can manipulate the photons' wavelengths, joint spectrum, and, thus, entanglement. As an example, we produce photon pairs with no spectral correlations, allowing direct heralding of single photons in pure-state wave packets without filtering. We achieve an experimental purity of (85.9+/-1.6)%, while theoretical analysis and preliminary tests suggest that 94.5% purity is possible with a much longer fiber.
ISSN:0031-9007
DOI:10.1103/physrevlett.102.123603