26 November 2007 The study of single photon detector for quantum key distribution
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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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhengjun Wei, Zhengjun Wei, Jindong Wang, Jindong Wang, Kaizhen Li, Kaizhen Li, Peng Zhou, Peng Zhou, Changjun Liao, Changjun Liao, Jianping Guo, Jianping Guo, Songhao Liu, 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); doi: 10.1117/12.756615; https://doi.org/10.1117/12.756615
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