The study of single photon detector for quantum key distribution

Zhengjun Wei; Jindong Wang; Kaizhen Li; Peng Zhou; Changjun Liao; Jianping Guo; Songhao Liu

doi:10.1117/12.756615

26 November 2007 The study of single photon detector for quantum key distribution

Zhengjun Wei, Jindong Wang, Kaizhen Li, Peng Zhou, Changjun Liao, Jianping Guo, Songhao Liu

Proceedings Volume 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography; 68270E (2007) https://doi.org/10.1117/12.756615
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

This paper introduces the design of a single photon detector based on the AT89C51 single chip microcontroller for quantum key distribution at telecommunication wavelengths. An avalanche photodiode (APD) is operated in Geiger mode and stabilized at temperature of 228K for translating the single photon signals into electrical pulses. The photon induced avalanche pulses are amplified and converted to digital data. The microcontroller discriminates the data, counting the number of photons, and then displays the photon number and the detection efficiency on a LCD display. The instrument can effectively support the study of quantum key distribution.

Citation Download Citation

Zhengjun Wei, Jindong Wang, Kaizhen Li, Peng Zhou, Changjun Liao, Jianping Guo, and Songhao Liu "The study of single photon detector for quantum key distribution", Proc. SPIE 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography, 68270E (26 November 2007); https://doi.org/10.1117/12.756615

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