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Detector imperfections in photon-pair source characterization

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Published in Journal of Physics. B, Atomic, Molecular and Optical Physics. 2012, vol. 45, no. 12, p. 124016
Abstract We analyse how imperfections in single-photon detectors impact the characterization of photon-pair sources. We perform exact calculations to reveal the effects of multi-pair emissions and of noisy, non-unit efficiency, nonphoton-number resolving detections on the Cauchy–Schwarz parameter, on the second-order auto-correlation and cross-correlation functions, and on the visibilities of both Hong–Ou–Mandel and Bell-like interferences. We consider sources producing either two-mode squeezed states or states with a Poissonian photon distribution. The proposed formulas are useful in practice to determine the impacts of multi-pair emissions and dark counts in standard tests used in quantum optics.
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SEKATSKI, Pavel et al. Detector imperfections in photon-pair source characterization. In: Journal of Physics. B, Atomic, Molecular and Optical Physics, 2012, vol. 45, n° 12, p. 124016. https://archive-ouverte.unige.ch/unige:36543

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Deposited on : 2014-05-13

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