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Acta Optica Sinica

Optical Quantum Random Number Generator Based on the Time Randomness of Single-Photon Pulse

鄢秋荣 Yan Qiurong, 赵宝升 Zhao Baosheng, 刘永安, 盛立志 Sheng Lizhi

Published Jan 1, 2012• 0 citations
Publisher
DOI
10.3788/aos201232.0327001

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This paper proposes and demonstrates an optical quantum random number generator based on distribution of single photon pulse amplitude of a photomultiplier tube.The light emitted from ultraviolet LED is attenuated into discrete single photon sequence.After these photons are detected by the photomultiplier tube,the single-photon pulses with random distribution are output.Digital values of peaks of these single-photon pulses are used as the entropy sources of random number generation.In order to reduce the bias of the raw extracted random number,the SHA-256 post processing method based on FPGA is proposed and implemented.When our designed quantum random number generator works at a counting rate of 500kc/s,7random bits can be extracted on average per detected photon,and a random number generation rate of 3.5Mbit/s is obtained.The random bit sequences are tested by random number test programs ENT and STS.The test results show that the generated random bit sequences fully meet the standards of true random numbers.
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