Fast Post-processing Method for Practical Quantum Random Number Generators Based on Spontaneous Emission Amplification

Qixia Tong; Yingying Hu; Deyong He; Zhengfu Han

doi:10.3788/LOP230839

Laser & Optoelectronics Progress, Volume. 61, Issue 5, 0527001(2024)

Fast Post-processing Method for Practical Quantum Random Number Generators Based on Spontaneous Emission Amplification

Qixia Tong, Yingying Hu, Deyong He^*, and Zhengfu Han^**

Author Affiliations

CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, Anhui , China

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Figures & Tables(6)

Fig. 1. Experimental schematic diagram for quantum random number generators based on ASE

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Fig. 2. Best gamma fitting of measured experimental data

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Fig. 3. Calculating run lengths of nonuniform sequences.

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Fig. 4. Comparison of the time spent on post-processing random bits of different scales between the proposed method and the Toeplitz matrix

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Table 1. Longest run length of bit sequences, compression factor and min-entropy of bit sequences under different ASE power

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Table 1. Longest run length of bit sequences, compression factor and min-entropy of bit sequences under different ASE power

Power of ASE / $m W$	Longest run length of bit sequences $T$					Compression factor $η$	Min-entropy $H_{m i n}$
	bit-3	bit-4	bit-5	bit-6	bit-7
10	26	26	26	481		456	4.11
20	22	23	25	42		18	4.66
30	22	22	24	36		13	4.80
40	23	25	24	27		4	4.95
50		24	24	32	254	223	5.09
60		24	26	32	163	132	5.17

Table 2. Results of the NIST-STS test suite for bit sequences^［19］

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Table 2. Results of the NIST-STS test suite for bit sequences^［19］

Statistical test	P-value	Proportion
Frequency	0.3267	395/400
Block frequency	0.9357	394/400
Cumulative sums	0.0213	395/400
Runs	0.6371	400/400
Longest run	0.1041	391/400
Rank	0.0028	396/400
FFT	0.3753	399/400
Non overlapping template	0.1154	397/400
Overlapping template	0.7744	397/400
Universal	0.2190	396/400
Approximate entropy	0.1742	395/400
Random excursions	0.1824	243/246
Random excursions variant	0.4607	245/246
Serial	0.0609	398/400
Linear complexity	0.4846	398/400

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Qixia Tong, Yingying Hu, Deyong He, Zhengfu Han. Fast Post-processing Method for Practical Quantum Random Number Generators Based on Spontaneous Emission Amplification[J]. Laser & Optoelectronics Progress, 2024, 61(5): 0527001

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