Chinese Optics Letters, Volume. 21, Issue 6, 061901(2023)

400 Gb/s physical random number generation based on deformed square self-chaotic lasers

Jiancheng Li1,2, Yali Li1,2, Yunxiao Dong1,2, Yuede Yang1,2, Jinlong Xiao1,2、*, and Yongzhen Huang1,2
Author Affiliations
  • 1State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(6)
    Schematic of fast physical random number generation with retaining multiple least significant bits. EDFA, erbium-doped fiber amplifier; OBPF, optical band-pass filter; PD, photodetector; ADC, analog-to-digital converter; LSB, least significant bit.
    (a) The output power and applied voltage versus the injection current. Inset in (a), schematic diagram of the 2D circular-sided square microcavity. (b) The optical spectrum, (c) the RF spectra, (d) the time series, (e) the intensity distribution of the time series, and (f) the autocorrelation function of the time signal for the chaos state at 32 mA. Inset in (f), overall ACF curve within 1 µs.
    Probability distribution histogram of the digitalized chaotic signal with (a) LSBs = 7, (b) LSBs = 6, (c) LSBs = 5, and (d) LSBs = 4.
    RF spectrum of the recovered time series with retaining 4-LSBs.
    (a) Statistical bias and (b) absolute autocorrelation function versus the sample size of the generated 400 Gb/s random bit stream. The first 100 points of the 200-Mbits autocorrelation coefficient are shown in (b).
    • Table 1. Results of the NIST SP 800-22 Statistical Tests for Random Bit Sequence

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      Table 1. Results of the NIST SP 800-22 Statistical Tests for Random Bit Sequence

      Statistical TestP-valueProportionResult
      Frequency0.248010.992Success
      Block frequency0.006910.994Success
      Runs0.044220.989Success
      Longest run0.614230.992Success
      Rank0.873990.986Success
      FFT0.747900.987Success
      Nonoverlaping template0.019590.994Success
      Overlapping template0.128130.990Success
      Universal0.365250.990Success
      Linear complexity0.010460.989Success
      Serial0.197980.988Success
      Approximate entropy0.060490.987Success
      Cumulative sums0.291090.992Success
      Random excursions0.228010.989Success
      Random excursions variant0.009610.992Success
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    Jiancheng Li, Yali Li, Yunxiao Dong, Yuede Yang, Jinlong Xiao, Yongzhen Huang. 400 Gb/s physical random number generation based on deformed square self-chaotic lasers[J]. Chinese Optics Letters, 2023, 21(6): 061901

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    Paper Information

    Category: Nonlinear Optics

    Received: Jan. 23, 2023

    Accepted: Mar. 24, 2023

    Posted: Mar. 24, 2023

    Published Online: Jun. 7, 2023

    The Author Email: Jinlong Xiao (jlxiao@semi.ac.cn)

    DOI:10.3788/COL202321.061901

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