Experimental Realization of Device-Independent Quantum Randomness Expansion

Randomness expansion where one generates a longer sequence of random numbers from a short one is viable in quantum mechanics but not allowed classically. Device-independent quantum randomness expansion provides a randomness resource of the highest security level. Here, we report the first experiment...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2021-02
Main Authors: Ming-Han, Li, Zhang, Xingjian, Wen-Zhao, Liu, Si-Ran Zhao, Bai, Bing, Liu, Yang, Zhao, Qi, Peng, Yuxiang, Zhang, Jun, Zhang, Yanbao, Munro, William J, Ma, Xiongfeng, Zhang, Qiang, Fan, Jingyun, Jian-Wei, Pan
Format: Article
Language:English
Subjects:
Algorithms
Cryptography
Elections
Harvesting
Numbers
Quantum mechanics
Random numbers
Randomness
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Randomness expansion where one generates a longer sequence of random numbers from a short one is viable in quantum mechanics but not allowed classically. Device-independent quantum randomness expansion provides a randomness resource of the highest security level. Here, we report the first experimental realization of device-independent quantum randomness expansion secure against quantum side information established through quantum probability estimation. We generate \(5.47\times10^8\) quantum-proof random bits while consuming \(4.39\times10^8\) bits of entropy, expanding our store of randomness by \(1.08\times10^8\) bits at a latency of about \(13.1\) h, with a total soundness error \(4.6\times10^{-10}\). Device-independent quantum randomness expansion not only enriches our understanding of randomness but also sets a solid base to bring quantum-certifiable random bits into realistic applications.
ISSN:2331-8422
DOI:10.48550/arxiv.1902.07529