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