Yan Lin Tang;Hua Lei Yin;Qi Zhao;Hui Liu;Xiang Xiang Sun;Ming Qi Huang;Wei Jun Zhang;Si Jing Chen;Lu Zhang;立星 尤;镇 王;Yang Liu;Chao Yang Lu;Xiao Jiang;Xiongfeng Ma;Qiang Zhang;Teng Yun Chen;建伟 潘
University of Science and Technology of China;Tsinghua University;CAS - Shanghai Institute of Microsystem and Information Technology
发表时间:2016
期 刊:Physical Review X
语 言:English
U R L: http://www.scopus.com/inward/record.url?scp=84984908667&partnerID=8YFLogxK
Quantum cryptography holds the promise to establish an information-theoretically secure global network. All field tests of metropolitan-scale quantum networks to date are based on trusted relays. The security critically relies on the accountability of the trusted relays, which will break down if the relay is dishonest or compromised. Here, we construct a measurement-device-independent quantum key distribution (MDIQKD) network in a star topology over a 200-square-kilometer metropolitan area, which is secure against untrustful relays and against all detection attacks. In the field test, our system continuously runs through one week with a secure key rate 10 times larger than previous results. Our results demonstrate that the MDIQKD network, combining the best of both worlds-security and practicality, constitutes an appealing solution to secure metropolitan communications.
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2012 | 4.3 | 7.632 | 1.797 |
2013 | 10.4 | 7.335 | 2.834 |
2014 | 9.4 | 8.101 | 2.993 |
2015 | 13 | 6.568 | 2.512 |
2016 | 16.8 | 7.434 | 3.24 |
2017 | 22.1 | 6.11 | 3.344 |
2018 | 21.6 | 6.497 | 3.281 |
2019 | 20.6 | 7.458 | 3.199 |
2020 | 22.1 | 7.94 | 3.384 |
2021 | 20.9 |
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