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• W3111395985 abstract "摘要 提出了一种基于混沌激光的在线实时产生高速物理随机数的方法，通过对连续的混沌激光进行光采样得到离散的混沌激光脉冲序列，利用差分比较器对混沌脉冲序列进行自延迟比较，在线实时输出高速物理随机数.并以光反馈半导体激光器这一典型混沌激光产生装置作为物理熵源，对所提方法进行了原理性实验论证，实现了实时速率为7 Gbit/s的物理随机数在线产生，可成功通过随机数行业测试标准（NIST SP 800-22）. 关键词: 混沌激光 / 物理随机数 / 光采样 / 延时比较 Abstract Random numbers are used to encrypt the information in the field of secure communications. According to one-time pad theory found by Shannon, the absolute security of the high-speed communication requires the ultrafast reliable random numbers to be generated in real-time. Using complex algorithms can generate pseudorandom numbers, but they can be predicted due to their periodicity. Random numbers based on physical stochastic phenomena (such as electronic noise, frequency jitter of oscillator) can provide reliable random numbers. However, their generation rates are at a level of Mbit/s typically, limited by the bandwidth of traditional physical sources. In recent years, high-speed physical random number generation based on chaotic laser has attracted much attention. Common methods of extracting random numbers are to sample and quantitate the chaotic signal in electronic domain with a 1-bit or multi-bit analog-to-digital converter (ADC) triggered by an RF clock and then post-process the original binary sequences into random numbers. However, the large jitter of the RF clock severely restricts the speed of ADC. Moreover, the existence of the subsequent post-processing process put a huge challenge to how the synchronization is kept among all the devices (e.g., XOR gates, memory buffers, parallel serial converters) by using an RF clock. Thus, to our knowledge, the fastest real-time speed of the reported physical random number generator is less than 5 Gbit/s. In this paper, we propose a novel method of generating the real-time physical random numbers by utilizing chaotic laser pulses. Through sampling the chaotic laser in all-optical domain by using a mode-locked pulsed laser, chaotic laser pulse sequences can be obtained. Then, real-time physical random numbers are obtained directly by self-delay comparing the chaotic pulse sequences with no need of RF clock nor any post-processing. Furthermore, a proof-of-principle experiment is carried out, in which an optical feedback chaotic semiconductor laser is employed as an entropy source. Experimental results show that the real-time random number sequences at rates of up to 7 Gbit/s can be achieved. The real-time speed is mainly limited by the bandwidth of the applied chaotic signal. If the chaotic laser with a higher bandwidth is adopted, the real-time generation rate can be further enhanced. Keywords: chaotic laser / physical random numbers / optical sampling / delay compare 作者及机构信息 赵东亮1,2, 李璞1,2, 刘香莲1,2, 郭晓敏1,2, 郭龑强1,2, 张建国1,2, 王云才1,2 1. 太原理工大学, 新型传感器与智能控制教育部重点实验室, 太原 030024; 2. 太原理工大学物理与光电工程学院, 光电工程研究所, 太原 030024 通信作者: 李璞, lipu@tyut.edu.cn 基金项目: 国家自然科学基金科学仪器基础研究专款项目（批准号：61227016）、国家自然科学基金（批准号：61505137，61405138，51404165）、国家国际科技合作专项（批准号：2014DFA50870）、山西省自然科学基金（批准号：2015021088）和山西省高等学校科技创新项目（批准号：2015122）资助的课题. Authors and contacts Zhao Dong-Liang1,2, Li Pu1,2, Liu Xiang-Lian1,2, Guo Xiao-Min1,2, Guo Yan-Qiang1,2, Zhang Jian-Guo1,2, Wang Yun-Cai1,2 1. Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Eduction and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China; 2. Institute of Optoelectronic Engineering, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China Corresponding author: Li Pu, lipu@tyut.edu.cn Funds: Project supported by the Special Fund for Basic Research on Scientific Instruments of the National Natural Science Foundation of China (Grant No. 61227016), the National Natural Science Foundation of China (Grant Nos. 61505137, 61405138, 51404165), the Funds for International Cooperation and Exchange of the National Natural Science Foundation of China (Grant No. 2014DFA50870), the Natural Science Foundation of Shanxi Province, China (Grant No. 2015021088), and the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi Province, China (Grant No. 2015122). 参考文献 [1] Shannon C E 1949Bell Syst.Tech.J. 28 656 [2] Aaldert C 1991Am.J.Phys. 59 700 [3] Xu P, Wong Y L, Horiuchi T K, Abshire P A 2006Electron.Lett. 42 1346 [4] Bucci M, Germani L, Luzzi R, Trifiletti A, Varanonuovo M 2003IEEE Trans.Comput. 52 403 [5] Wang A B, Wang Y C, He H C 2008IEEE Photonics Technol.Lett. 20 1633 [6] Uchida A, Heil T, Liu Y, Davis P, Aida T 2003IEEE J.Quantum Electron. 39 1462 [7] Zhang M J, Liu T G, Wang A B, Zheng J Y, Meng L N, Zhang Z X, Wang Y C 2011Opt.Lett. 36 1008 [8] Zhao Q C, Yin H X 2013Laser Optoelectron.Prog. 50 23(in Chinese)[赵清春, 殷洪玺2013激光与光电子学进展50 23] [9] Soriano M C, Garcaojalvo J, Mirasso C R, Fischer I 2013Rev.Mod.Phys. 85 421 [10] Uchida A, Amano K, Inoue M, Hirano K, Naito S, Someya H, Oowada I, Kurashige T, Shiki M, Yoshimori S, Yoshimura K, Davis P 2008Nat.Photonics 2 728 [11] Wang A B, Li P, Zhang J G, Zhang J Z, Li L, Wang Y C 2013Opt.Express 21 20452 [12] Reidler I, Aviad Y, Rosenbluh M, Kanter I 2009Phys.Rev.Lett. 103 024102 [13] Tang X, Wu J G, Xia G Q, Wu Z M 2011Acta Phys.Sin. 60 110509(in Chinese)[唐曦, 吴加贵, 夏光琼, 吴正茂2011物理学报60 110509] [14] Li N Q, Kim B, Chizhevsky V N, Locquet A, Bloch M, Citrin D S, Pan W 2014Opt.Express 22 6634 [15] Jiang L, Li P, Zhang J Z, Sun Y Y, Hu B, Wang Y C 2015Acta Phys.Sin. 64 154213(in Chinese)[江镭, 李璞, 张建忠, 孙媛媛, 胡兵, 王云才2015物理学报64 154213] [16] Li P, Jiang L, Zhang J G, Zhang J Z, Wang Y C 2015IEEE Photonics J. 7 7801108 [17] Lin F Y, Liu J M 2003Opt.Commun. 221 173 [18] Zhang J B, Zhang J Z, Yang Y B, Liang J S, Wang Y C 2010Acta Phys.Sin. 59 7679(in Chinese)[张继兵, 张建忠, 杨毅彪, 梁君生, 王云才2010物理学报59 7679] [19] Li P, Sun Y Y, Liu X L, Yi X G, Zhang J G, Guo X M, Guo Y Q, Wang Y C 2016Opt.Lett. 41 3347 施引文献" @default.
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• W3111395985 title "Online real-time 7 Gbit/s physical random number generation utilizing chaotic laser pulses" @default.
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