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Quantum efficiency measurements by bidirectional coincidence counting of correlated photon pairs

Quantum efficiency measurements by bidirectional coincidence counting of correlated photon pairs

Optics Letters 32(21): 3176-3178

We propose and demonstrate a procedure for characterizing the quantum efficiency of a single-photon detector in the telecommunication wavelength band. Our procedure employs a bidirectional coincidence counting technique to distinguish optical component losses from the detection efficiency. The standard deviations of the measured quantum efficiencies were nearly identical to the standard deviations derived from a detection probability having a Poisson distribution.

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Accession: 055326712

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PMID: 17975635

DOI: 10.1364/ol.32.003176

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