title: Tbits/s physical random bit generation based on mutually coupled semiconductor laser chaotic entropy source.
abstract: 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.
authors.forename: Xi
authors.initials: X
authors.lastname: Tang
authors.forename: Zheng-Mao
authors.initials: ZM
authors.lastname: Wu
authors.forename: Jia-Gui
authors.initials: JG
authors.lastname: Wu
authors.forename: Tao
authors.initials: T
authors.lastname: Deng
authors.forename: Jian-Jun
authors.initials: JJ
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Fan
authors.forename: Zhu-Qiang
authors.initials: ZQ
authors.lastname: Zhong
authors.forename: Guang-Qiong
authors.initials: GQ
authors.lastname: Xia