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
Original Manuscript: October 8, 2012
Revised Manuscript: December 5, 2012
Manuscript Accepted: December 10, 2012
Published: December 20, 2012
Shen Li, Long Wang, Ling-An Wu, Hai-Qiang Ma, and Guang-Jie Zhai, "True random number generator based on discretized encoding of the time interval between photons," J. Opt. Soc. Am. A 30, 124-127 (2013)