Tailored photon-pair generation in optical fibers

Offir Cohen, Jeff S Lundeen, Brian J Smith, Graciana Puentes, Peter James Mosley, Ian A Walmsley

Research output: Contribution to journalArticlepeer-review

169 Citations (SciVal)


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.
Original languageEnglish
Article number123603
Number of pages4
JournalPhysical Review Letters
Issue number12
Early online date27 Mar 2009
Publication statusPublished - 27 Mar 2009


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