Bright filter-free source of indistinguishable photon pairs

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dc.creatorWolfgramm, F.
dc.creatorXing, X.
dc.creatorCerè, A.
dc.creatorPredojević, A.
dc.creatorSteinberg, A. M.
dc.creatorMitchell, M. W.
dc.date2008-06-25
dc.date2008-10-23
dc.date.accessioned2026-07-07T10:12:17Z
dc.date.available2026-07-07T10:12:17Z
dc.descriptionWe demonstrate a high-brightness source of pairs of indistinguishable photons based on a type-II phase-matched doubly-resonant optical parametric oscillator operated far below threshold. The cavity-enhanced down-conversion output of a PPKTP crystal is coupled into two single-mode fibers with a mode coupling efficiency of 58%. The high degree of indistinguishability between the photons of a pair is demonstrated by a Hong-Ou-Mandel interference visibility of higher than 90% without any filtering at an instantaneous coincidence rate of 450 000 pairs/s per mW of pump power per nm of down-conversion bandwidth. For the degenerate spectral mode with a linewidth of 7 MHz at 795 nm a rate of 70 pairs/(s mW MHz) is estimated, increasing the spectral brightness for indistinguishable photons by two orders of magnitude compared to similar previous sources.
dc.description7 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0806.4090
dc.identifierhttp://arxiv.org/abs/0806.4090
dc.identifierOpt. Express 16, 18145-18151 (2008)
dc.identifierdoi:10.1364/OE.16.018145
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/172134
dc.subjectQuantum Physics
dc.titleBright filter-free source of indistinguishable photon pairs
dc.typetext

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