Yan-Fei Liu, Cheng Chen, Dong-Dong Yang, Xiu-Jian Li. Generation of 8 Gb/s physical random numbers based on spontaneous chaotic oscillation of GaAs/Al0.45Ga0.55As superlattices [J]. Acta Physica Sinica, 2020, 69(10): 100504-1
- Acta Physica Sinica
- Vol. 69, Issue 10, 100504-1 (2020)
Fig. 1. (a) Picture of SLs chip; (b) schematic representation of the SLs device; (c) energy band diagram of SLs; (d) the models of high and low field domain and sequential tunneling of SLs.
Fig. 2. Schematic for high speed physical random number generator of SLs (HAPS, high accuracy powersupply; BT, Bias-Tee; SLs, superlattices; L , inductance (unit Lenz); C , capacitance; OSC, oscilloscope; VNA, vector network analyzer; ADC, analog digital converter; FPGA, field programmable gate array).
Fig. 3. I -V characteristic curve of SLs.
Fig. 4. Superlattices: (a) Temporal waveform of single peak signal; (b) temporal waveform of bimodal signal; (c) temporal waveform of non-periodic signal; (d) power spectrum of single peak signal; (e) power spectrum of single bimodal signal; (f) power spectrum of single non-periodic signal.
Fig. 5. Autocorrelation curve of SLs.
Fig. 6. (a) The maximum Lyapunov exponents of the superlattices signal at different voltages; (b) the phase space of the superlattices signal.
Fig. 7. M-bit effective probability density distribution: (a) m = 8; (b) m = 6; (c) m = 5; (d) m = 4.
Fig. 8. acquisition scheme of SLs: (a) Schematic diagram of acquisition conversion; (b) schematic diagram of postprocessing.
Fig. 9. Results of NIST for superlatticesrandom numbers at different Les.
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Table 1. Results of NIST statistical test.
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