Parallel Generation of 10 Gbits/s Physical Random Number
Streams Using Chaotic Semiconductor Lasers¹

J. G. Wu^{a, b}, X. Tang^b, Z. M. Wu^b, *, G. Q. Xia^{b, c}, and G. Y. Feng^a

^a School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China

^b School of Physics, Southwest University, Chongqing 400715, China

^c State Key Lab of Millimeter Waves, Southeast University, Nanjing 210096, China

*e-mail: zmwu@swu.edu.cn

Received March 12, 2012; published online September 3, 2012

Abstract—In this paper, we have realized experimentally, for the first time to our knowledge, a parallel gener-
ation scheme of high speed random numbers by using chaotic laser. In our setup, two broadband chaos signals
are obtained experimentally from a mutually coupled semiconductor lasers system. The bandwidths of these
signals are over 10 GHz. Next, by using such chaos signals as entropy sources, two 10 Gbits/s physical random
number streams are generated concurrently and successfully pass the NIST statistical tests. Our system is scal-
able and the rate of random numbers could be further enhanced by simply adding more channels.

DOI: 10.1134/S1054660X12100246

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