Zhu EY, Tang Z, Qian L, Helt LG, Liscidini M, Sipe JE, Corbari C, Canagasabey A, Ibsen M, Kazansky PG. Poled-fiber source of broadband polarization-entangled photon pairs.
Opt Lett 2013;
38:4397-4400. [PMID:
24177103 DOI:
10.1364/ol.38.004397]
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Abstract
We demonstrate broadband polarization-entangled photon pair generation in a poled fiber phase matched for Type II downconversion in the 1.5 μm telecom band. Even with signal-idler separation greater than 100 nm, we observe fringe visibilities greater than 97% and tangle greater than 0.8. A Hong-Ou-Mandel interference experiment is also used to experimentally confirm the broadband nature of the entanglement.
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