Detector imperfections in photon-pair source characterization

P Sekatski, N Sangouard, F Bussières, C Clausen, N Gisin, H Zbinden
2012 Journal of Physics B: Atomic, Molecular and Optical Physics  
We analyze 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, non photon-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
more » ... r 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.
doi:10.1088/0953-4075/45/12/124016 fatcat:couwy2ustfaabalpb5xghjz2uu