中国物理B ›› 2010, Vol. 19 ›› Issue (8): 80308-080308.doi: 10.1088/1674-1056/19/8/080308

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

刘云, 吴青林, 韩正甫, 戴逸民, 郭光灿   

  1. Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2007-11-05 修回日期:2009-04-14 出版日期:2010-08-15 发布日期:2010-08-15
  • 基金资助:
    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).

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

Liu Yun(刘云), Wu Qing-Lin(吴青林), Han Zheng-Fu(韩正甫)†, Dai Yi-Min(戴逸民), and Guo Guang-Can(郭光灿)   

  1. Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China
  • Received:2007-11-05 Revised:2009-04-14 Online:2010-08-15 Published:2010-08-15
  • Supported by:
    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).

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摘要： 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.

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.

Key words: quantum information, quantum key distribution, single photon detection, single photon counting

中图分类号:  (Photodiodes; phototransistors; photoresistors)

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