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Internal cancellation of spikes using two avalanche photodiodes in series for single photon detection

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【Author】 Liu Yun Wu Qing-Lin,Han Zheng-Fu~+, Dai Yi-Min,and Guo Guang-Can Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China

【机构】 Key Laboratory of Quantum Information,University of Science and Technology of China；

【摘要】 <正>We propose a method of improving the performance of InGaAs/InP avalanche photodiodes by using two avalanche photodiodes in series as single photon detectors for 1550-nm wavelength.In this method,the raw single photon avalanche signals are not attenuated,thus a high signal-to-noise ratio can be obtained compared with the existing results.The performance of the scheme is investigated and the ratio of the dark count rate to the detection efficiency is obtained to be 1.3×10^-4 at 213 K.更多还原

【Abstract】 We propose a method of improving the performance of InGaAs/InP avalanche photodiodes by using two avalanche photodiodes in series as single photon detectors for 1550-nm wavelength.In this method,the raw single photon avalanche signals are not attenuated,thus a high signal-to-noise ratio can be obtained compared with the existing results.The performance of the scheme is investigated and the ratio of the dark count rate to the detection efficiency is obtained to be 1.3×10^-4 at 213 K.更多还原

【关键词】 quantum information； quantum key distribution； single photon detection； single photon counting；
【Key words】 quantum information； quantum key distribution； single photon detection； single photon counting；

【基金】 Project supported by the National Major Fundamental Research Program of China(Grant No.2006CB921900);the Knowledge Innovation Project of the Chinese Academy of Sciences,and the National Natural Science Foundation of China(Grant Nos.60537020 and 60121503)

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2010年08期

【分类号】O431.2
【下载频次】23

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