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DOI | 10.1038/s41586-019-1554-z |
Device-independent quantum random-number generation | |
Liu, Yang1,2,3; Zhao, Qi4; Li, Ming-Han1,2,3; Guan, Jian-Yu1,2,3; Zhang, Yanbao6,7; Bai, Bing1,2,3; Zhang, Weijun5; Liu, Wen-Zhao1,2,3; Wu, Cheng1,2,3; Yuan, Xiao1,2,3,4; Li, Hao5; Munro, W. J.6,7; Wang, Zhen5; You, Lixing5; Zhang, Jun1,2,3; Ma, Xiongfeng4; Fan, Jingyun1,2,3; Zhang, Qiang1,2,3; Pan, Jian-Wei1,2,3 | |
2019-09-18 | |
发表期刊 | NATURE
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ISSN | 0028-0836 |
EISSN | 1476-4687 |
出版年 | 2018 |
卷号 | 562期号:7728页码:548-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Japan |
英文摘要 | Randomness is important for many information processing applications, including numerical modelling and cryptography(1,2). Device-independent quantum random-number generation (DIQRNG)(3,4) based on the loophole-free violation of a Bell inequality produces genuine, unpredictable randomness without requiring any assumptions about the inner workings of the devices, and is therefore an ultimate goal in the field of quantum information science(5-7). Previously reported experimental demonstrations of DIQRNG(8,9) were not provably secure against the most general adversaries or did not close the 'locality' loophole of the Bell test. Here we present DIQRNG that is secure against quantum and classical adversaries(10-12). We use state-of-the-art quantum optical technology to create, modulate and detect entangled photon pairs, achieving an efficiency of more than 78 per cent from creation to detection at a distance of about 200 metres that greatly exceeds the threshold for closing the 'detection' loophole of the Bell test. By independently and randomly choosing the base settings for measuring the entangled photon pairs and by ensuring space-like separation between the measurement events, we also satisfy the no-signalling condition and close the 'locality' loophole of the Bell test, thus enabling the realization of the loophole-free violation of a Bell inequality. This, along with a high-voltage, high-repetition-rate Pockels cell modulation set-up, allows us to accumulate sufficient data in the experimental time to extract genuine quantum randomness that is secure against the most general adversaries. By applying a large (137.90 gigabits x 62.469 megabits) Toeplitz-matrix hashing technique, we obtain 6.2469 x 10(7) quantum-certified random bits in 96 hours with a total failure probability (of producing a random number that is not guaranteed to be perfectly secure) of less than 10(-5). Our demonstration is a crucial step towards transforming DIQRNG from a concept to a key aspect of practical applications that require high levels of security and thus genuine randomness(7). Our work may also help to improve our understanding of the origin of randomness from a fundamental perspective. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000448277800050 |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203118 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Sci & Technol China, Natl Lab Phys Sci Microscale, Hefei, Anhui, Peoples R China; 2.Univ Sci & Technol China, Dept Modern Phys, Hefei, Anhui, Peoples R China; 3.Univ Sci & Technol China, Shanghai Branch, CAS Ctr Excellence & Synerget Innovat Ctr Quantum, Shanghai, Peoples R China; 4.Tsinghua Univ, Inst Interdisciplinary Informat Sci, Ctr Quantum Informat, Beijing, Peoples R China; 5.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai, Peoples R China; 6.NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa, Japan; 7.NTT Corp, NTT Res Ctr Theoret Quantum Phys, Atsugi, Kanagawa, Japan |
推荐引用方式 GB/T 7714 | Liu, Yang,Zhao, Qi,Li, Ming-Han,et al. Device-independent quantum random-number generation[J]. NATURE,2019,562(7728):548-+. |
APA | Liu, Yang.,Zhao, Qi.,Li, Ming-Han.,Guan, Jian-Yu.,Zhang, Yanbao.,...&Pan, Jian-Wei.(2019).Device-independent quantum random-number generation.NATURE,562(7728),548-+. |
MLA | Liu, Yang,et al."Device-independent quantum random-number generation".NATURE 562.7728(2019):548-+. |
条目包含的文件 | 条目无相关文件。 |
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