title: Quantum efficiency measurements by bidirectional coincidence counting of correlated photon pairs.
abstract: 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.
authors.affiliation: National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan. odate@nict.go.jp
authors.forename: Satoru
authors.initials: S
authors.lastname: Odate
authors.forename: Akio
authors.initials: A
authors.lastname: Yoshizawa
authors.forename: Daiji
authors.initials: D
authors.lastname: Fukuda
authors.forename: Hidemi
authors.initials: H
authors.lastname: Tsuchida