Absolute self-calibration of the quantum efficiency of single-photon detectors

被引:20
作者
Chen, Xi-Hao
Zhai, Yan-Hua
Zhang, Da
Wu, Ling-An
机构
[1] Chinese Acad Sci, Inst Phys, Lab Phys Opt, Beijing 100080, Peoples R China
[2] Liaoning Univ, Dept Phys, Shenyang 110036, Peoples R China
关键词
D O I
10.1364/OL.31.002441
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Single-photon detectors are finding increasingly wide application in all branches of science and technology thus a precise knowledge of their quantum efficiency is an essential prerequisite. We have performed the first proof-of-principle demonstration of a means to determine the quantum efficiency by which no second detector or reference standard is required. This absolute self-calibration method is based on the time correlation of entangled photons pairs emitted in spontaneous parametric down conversion. The measured quantum efficiency of a Si avalanche photodiode single-photon detector agrees well with the product specifications. (c) 2006 Optical Society of America.
引用
收藏
页码:2441 / 2443
页数:3
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