期刊
PHYSICAL REVIEW LETTERS
卷 122, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.122.160501
关键词
-
资金
- National Key RAMP
- D Program of China [2018YFB0504303, 2017YFA0304003, 2017YFA0303903]
- National Natural Science Foundation of China [61771443, 61875182, 61705048]
- Anhui Initiative in Quantum Information Technologies
- Fundamental Research Funds for the Central Universities [WK2340000083]
- Shanghai Science and Technology Development Funds [18JC1414700]
- Thousand Young Talent program of China
- NSERC
- U.S. Office of Naval Research
- CFI
- ORF
- Huawei Canada
Measurement-device-independent quantum key distribution (MDI-QKD) can eliminate all detector side channels and it is practical with current technology. Previous implementations of MDI-QKD all used two symmetric channels with similar losses. However, the secret key rate is severely limited when different channels have different losses. Here we report the results of the first high-rate MDI-QKD experiment over asymmetric channels. By using the recent 7-intensity optimization approach, we demonstrate > 10 x higher key rate than the previous best-known protocols for MDI-QKD in the situation of large channel asymmetry, and extend the secure transmission distance by more than 20-50 km in standard telecom fiber. The results have moved MDI-QKD towards widespread applications in practical network settings, where the channel losses are asymmetric and user nodes could be dynamically added or deleted.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据