Tailored photon-pair generation in optical fibers

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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Veröffentlicht in:Physical review letters 2009-03, Vol.102 (12), p.123603-123603, Article 123603
Hauptverfasser: Cohen, Offir, Lundeen, Jeff S, Smith, Brian J, Puentes, Graciana, Mosley, Peter J, Walmsley, Ian A
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container_issue 12
container_start_page 123603
container_title Physical review letters
container_volume 102
creator Cohen, Offir
Lundeen, Jeff S
Smith, Brian J
Puentes, Graciana
Mosley, Peter J
Walmsley, Ian A
description 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.
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title Tailored photon-pair generation in optical fibers
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