Generation of polarization-entangled photons in a standard polarization-maintaining fiber

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We demonstrate the capability of standard, commercially available polarization-maintaining fibers (PMFs) to generate polarization-entangled photon-pairs by inserting a PMF source into a Sagnac interferometer. We perform a quantum state tomography to reconstruct the density matrix, yielding, without background subtraction or spectral filtering, a polarization-entangled photon-pair state with 92.37 ± 0.14% fidelity to the maximally entangled Bell state. With its high coupling efficiency into SMFs and ability to produce spectrally uncorrelated photons, we expect this source to be useful for free-space and fiber-based quantum information protocols.

Original languageEnglish (US)
Article number012007
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 2013
Externally publishedYes
Event21st International Laser Physics Workshop - Calgary, AB, Canada
Duration: Jul 23 2012Jul 27 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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