Open AccessTbits/s physical random bit generation based on mutually coupled semiconductor laser chaotic entropy source
Author(s) -
Xi Tang,
Zheng-Mao Wu,
Jiagui Wu,
Tao Deng,
Jianjun Chen,
Li Fan,
Zhuqiang Zhong,
Guang-Qiong Xia
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.033130
Subject(s) - nist , randomness , interleaving , chaotic , random number generation , entropy (arrow of time) , bitstream , computer science , algorithm , semiconductor laser theory , statistical physics , physics , optics , laser , statistics , mathematics , artificial intelligence , quantum mechanics , decoding methods , natural language processing , operating system
Using two mutually coupled semiconductor lasers (MC-SLs) outputs as chaotic entropy sources, a scheme for generating Tbits/s ultra-fast physical random bit (PRB) is demonstrated and analyzed experimentally. Firstly, two entropy sources originating from two chaotic outputs of MC-SLs are obtained in parallel. Secondly, by adopting multiple optimized post-processing methods, two PRB streams with the generation rate of 0.56 Tbits/s are extracted from the two entropy sources and their randomness are verified by using NIST Special Publication 800-22 statistical tests. Through merging the two sets of 0.56 Tbits/s PRB streams by an interleaving operation, a third set of 1.12 Tbits/s PRB stream, which meets all the quality criteria of NIST statistical tests, can be further acquired. Finally, after additionally taking into account the restriction of the min-entropy, the generation rate of two sets of PRB stream from the two entropy sources can still attain 0.48 Tbits/s, and then a third set of merging PRB stream is 0.96 Tbits/s. Moreover, for the sequence length of the order of 10 Gbits, the statistical bias and serial correlation coefficient of three sets of PRB streams are also analyzed.