应用光学, 2010, 31 (2): 322, 网络出版: 2010-05-31   

量子通信中单光子探测器的实验研究

Single photon detection used in quantum communication
作者单位
北京邮电大学理学院, 北京 100876
摘要
为了提高单光子探测系统的灵敏度,实验采用InGaAs/InP雪崩光电二极管作为量子通信中的单光子探测器件,以门控脉冲模式实现了更高精度的单光子探测器的偏压生成电路、单光子信号放大电路、单光子信号检测电路和温度控制模块,并通过选用高精度前置放大器OP37和精密比较器AD8561,将量子效率提高到18.3%,暗计数控制小于4.1%×10-6/ns。
Abstract
In order to improve the sensitivity of single-photon detection systems, InGaAs/InP avalanche photodiode (InGaAs/InP APD) is used in the design of single photon detector of quantum communication. Single photon detector bias generation circuit in gate pulse mode, single-photon signal amplification circuit, single photon signal detection circuit and temperature control module were realized. By selecting high-precision OP37 preamplifier and precision comparator AD8561, quantum efficiency was increased to 18.3%, dark count was controlled within 4.1 × 10-6/ns.
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韩宇宏, 杨树, 马海强. 量子通信中单光子探测器的实验研究[J]. 应用光学, 2010, 31(2): 322. HAN Yu-hong, YANG Shu, MA Hai-qiang. Single photon detection used in quantum communication[J]. Journal of Applied Optics, 2010, 31(2): 322.

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