Fiber-Optic Sources of Quantum Entanglement

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dc.creatorKumar, P.
dc.creatorLi, X.
dc.creatorFiorentino, M.
dc.creatorVoss, P. L.
dc.creatorSharping, J. E.
dc.creatorBarbosa, G. A.
dc.date2002-09-20
dc.date.accessioned2026-07-07T06:04:58Z
dc.date.available2026-07-07T06:04:58Z
dc.descriptionWe present a fiber-based source of polarization-entangled photon pairs that is well suited for quantum communication applications in the 1.5$μ$m band of standard telecommunication fiber. Quantum-correlated signal and idler photon pairs are produced when a nonlinear-fiber Sagnac interferometer is pumped in the anomalous-dispersion region of the fiber. Recently, we have demonstrated nonclassical properties of such photon pairs by using Geiger-mode InGaAs/InP avalanche photodiodes. Polarization entanglement in the photon pairs can be created by pumping the Sagnac interferometer with two orthogonally polarized pulses. In this case the parametrically scattered signal-idler photons yield biphoton interference with $>$90% visibility in coincidence detection, while no interference is observed in direct detection of either the signal or the idler photons.
dc.description6 pages, 4 figures; to appear in the Proceedings of QCMC'02: Quantum Communication, Measurement, and Computing (QCMC'02), J. H. Shapiro and O. Hirota, Eds., (Rinton Press, New Jersey, 2002)
dc.identifierhttps://arxiv.org/abs/quant-ph/0209112
dc.identifierhttp://arxiv.org/abs/quant-ph/0209112
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/90503
dc.subjectQuantum Physics
dc.titleFiber-Optic Sources of Quantum Entanglement
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