Using the correlated signal and idler photon pairs generated in a dispersion shifted fiber by a pulsed pump, we measure the quantum efficiency of a InGaAs/InP avalanche photodiode-based single photon detector. Since the collection efficiency of photon pairs is a key parameter to correctly deduce the quantum efficiency, we carefully characterize the collection efficiency by studying correlation dependence of photon pairs upon the spectra of pump, signal and idler photons. This study allows us to obtain quantum efficiency of the single photon detector by using photon pairs with various kinds of bandwidths.
@article{arxiv.1007.1866,
title = {Quantum efficiency measurement of single photon detectors using photon pairs generated in optical fibers},
author = {Xiaoying Li and Xiaoxin Ma and Limei Quan and Lei Yang and Liang Cui and Xueshi Guo},
journal= {arXiv preprint arXiv:1007.1866},
year = {2015}
}
Comments
21pages, 6figures, 4tables, accepted for publication in J. Opt. Soc. Am. B