A High-Randomness and High-Stability Electronic Quantum Random Number Generator without Post Processing
Yu-Xuan Liu, Ke-Xin Huang, Yu-Ming Bai, Zhe Yang, and Jun-Lin Li*
State Key Laboratory of Low-Dimensional Quantum Physics; Department of Physics, Tsinghua University, Beijing 100084, China
Abstract ：Random numbers are one of the key foundations of cryptography. This work implements a discrete quantum random number generator (QRNG) based on the tunneling effect of electrons in an avalanche photo diode. Without any post-processing and conditioning, this QRNG can output raw sequences at a rate of 100 Mbps. Remarkably, the statistical min-entropy of the 8,000,000 bits sequence reaches 0.9944 bits/bit, and the min-entropy validated by NIST SP 800-90B reaches 0.9872 bits/bit. This metric is currently the highest value we have investigated for QRNG raw sequences. Moreover, this QRNG can continuously and stably output raw sequences with high randomness over extended periods. The system produced a continuous output of 1,174 Gbits raw sequence for a duration of 11,744 s, with every 8 Mbits forming a unit to obtain a statistical min-entropy distribution with an average value of 0.9892 bits/bit. The statistical min-entropy of all data (1,174 Gbits) achieves the value of 0.9951 bits/bit. This QRNG can produce high-quality raw sequences with good randomness and stability. It has the potential to meet the high demand in cryptography for random numbers with high quality.
收稿日期: 2023-06-13
Express Letter
出版日期: 2023-06-27
PACS:
03.67.Dd
(Quantum cryptography and communication security)
73.40.Gk
(Tunneling)
85.60.Dw
(Photodiodes; phototransistors; photoresistors)
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2023, Vol. 40 
