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True random number generator based on discretized encoding of the time interval between photons

Shen Li, Long Wang, Ling-An Wu, Hai-Qiang Ma, and Guang-Jie Zhai

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Abstract

We propose an approach to generate true random number sequences based on the discretized encoding of the time interval between photons. The method is simple and efficient, and can produce a highly random sequence several times longer than that of other methods based on threshold or parity selection, without the need for hashing. A proof-of-principle experiment has been performed, showing that the system could be easily integrated and applied to quantum cryptography and other fields.

© 2012 Optical Society of America

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