1. Quantum random number generation with uncharacterized laser and sunlight
- Author
-
Juan Yin, Zheng-Ping Li, Cheng-Zhi Peng, Yu-Huai Li, Xuan Han, Qiang Zhang, Xiao Yuan, Jian-Wei Pan, Jian-Yu Guan, Yuan Cao, and Xiongfeng Ma
- Subjects
Quantum Physics ,Computer Networks and Communications ,Random number generation ,Computer science ,Entropy (statistical thermodynamics) ,FOS: Physical sciences ,Statistical and Nonlinear Physics ,Laser ,lcsh:QC1-999 ,lcsh:QA75.5-76.95 ,law.invention ,Quantum technology ,Computational Theory and Mathematics ,Orders of magnitude (time) ,law ,Computer Science (miscellaneous) ,Statistical physics ,lcsh:Electronic computers. Computer science ,Quantum Physics (quant-ph) ,Quantum ,Realization (probability) ,Randomness ,lcsh:Physics - Abstract
The entropy or randomness source is an essential ingredient in random number generation. Quantum random number generators generally require well modeled and calibrated light sources, such as a laser, to generate randomness. With uncharacterized light sources, such as sunlight or an uncharacterized laser, genuine randomness is practically hard to be quantified or extracted owing to its unknown or complicated structure. By exploiting a recently proposed source-independent randomness generation protocol, we theoretically modify it by considering practical issues and experimentally realize the modified scheme with an uncharacterized laser and a sunlight source. The extracted randomness is guaranteed to be secure independent of its source and the randomness generation speed reaches 1 Mbps, three orders of magnitude higher than the original realization. Our result signifies the power of quantum technology in randomness generation and paves the way to high-speed semi-self-testing quantum random number generators with practical light sources., Comment: 24 pages, 5 figures
- Published
- 2019