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Proceedings Paper

The study of single photon detector for quantum key distribution
Author(s): Zhengjun Wei; Jindong Wang; Kaizhen Li; Peng Zhou; Changjun Liao; Jianping Guo; Songhao Liu
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Paper 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.

Paper Details

Date Published: 26 November 2007
PDF: 5 pages
Proc. SPIE 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography, 68270E (26 November 2007); doi: 10.1117/12.756615
Show Author Affiliations
Zhengjun Wei, South China Normal Univ. (China)
Jindong Wang, South China Normal Univ. (China)
Kaizhen Li, South China Normal Univ. (China)
Peng Zhou, South China Normal Univ. (China)
Changjun Liao, South China Normal Univ. (China)
Jianping Guo, South China Normal Univ. (China)
Songhao Liu, South China Normal Univ. (China)

Published in SPIE Proceedings Vol. 6827:
Quantum Optics, Optical Data Storage, and Advanced Microlithography
Chris A. Mack; Jinfeng Kang; Jun-en Yao; Guangcan Guo; Song-hao Liu; Osamu Hirota; Guofan Jin; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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