A high-flux entanglement source based on a doubly resonant optical parametric amplifier

A 532 nm pumped type-II phase-matched, doubly resonant KTP optical parametric amplifier (OPA) was operated near frequency degeneracy to yield an inferred downconverted photon pair production rate of 1.7 x 10 exp 6/s at a pump power of 100 micro-W. The OPA output consisted of three components: narrow...

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Bibliographic Details
Published inJournal of optics. B, Quantum and semiclassical optics Vol. 4; no. 3; pp. S162 - S168
Main Authors Kuklewicz, Christopher E, Keskiner, Eser, Wong, Franco N C, Shapiro, Jeffrey H
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.06.2002
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Summary:A 532 nm pumped type-II phase-matched, doubly resonant KTP optical parametric amplifier (OPA) was operated near frequency degeneracy to yield an inferred downconverted photon pair production rate of 1.7 x 10 exp 6/s at a pump power of 100 micro-W. The OPA output consisted of three components: narrowband doubly resonant mode pairs; narrowband singly resonant mode pairs for which either the signal or idler was resonant with the cavity and broadband nonresonant mode pairs. Under frequency-degenerate operation, the broadband nonresonant mode pairs were polarization triplet states. We observed quantum interference between the orthogonally polarized photons of the triplet states when they were analyzed with a polarizer set at 45 deg relative to the OPA's output polarizations, leading to reduced coincidence counts. (Author)
Bibliography:ObjectType-Article-2
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ISSN:1464-4266
1741-3575
DOI:10.1088/1464-4266/4/3/370