光子学报, 2017, 46 (3): 0304001, 网络出版: 2017-04-10
基于相关光子的单光子探测器量子效率测量系统
Measurement System for Quantum Efficiency of the Single Photon Detector Based on Correlated Photons
量子光学 量子效率测量 自发参量下转换 相关光子 单光子探测器 Quantum optics Quantum efficiency measurement Spontaneous parametric down-conversion Correlated photons Single-photon detector
摘要
为准确测量近红外波段单光子探测器量子效率, 搭建了基于自发参量下转换效应的测量系统.系统利用中心波长为518 nm的脉冲激光泵浦周期极化磷酸氧钛钾晶体, 通过自发参量下转换过程产生相关光子对, 分别测量了Si和InGaAs雪崩光电二极管单光子探测器在778 nm和1 550 nm波长点的量子效率, 并对测量不确定度进行了分析.实验表明, 该装置可以测量近红外单光子探测器量子效率参量, 测量不确定度均优于1%.
Abstract
The measurement facility based on parametric down-conversion technique was established to measure the quantum efficiency of the near-infrared band single-photon detector. The correlated photons were generated via spontaneous parametric down-conversion in a periodically poled potassium titanyl phosphate crystal pumped by a 518 nm picosecond laser. The detection efficiency of Si-avalanche photodiode and InGaAs-avalanche photodiode single-photon detectors were measured via correlated photon pairs at 778 nm and 1 550 nm, respectively, and the measrement uncertainty was analyzed. The experiment results indicated that the facility can measuer near inferad single-photon detectors quantum efficiency with 1% measrement uncertainty.
史学舜, 刘长明, 赵坤, 陈海东. 基于相关光子的单光子探测器量子效率测量系统[J]. 光子学报, 2017, 46(3): 0304001. SHI Xue-shun, LIU Chang-ming, ZHAO Kun, CHEN Hai-dong. Measurement System for Quantum Efficiency of the Single Photon Detector Based on Correlated Photons[J]. ACTA PHOTONICA SINICA, 2017, 46(3): 0304001.