Asymmetric Measurement-Device-Independent Quantum Key Distribution through Advantage Distillation

被引:5
作者
Zhang, Kailu [1 ,2 ,3 ]
Liu, Jingyang [1 ,2 ,3 ]
Ding, Huajian [1 ,2 ,3 ]
Zhou, Xingyu [1 ,2 ,3 ]
Zhang, Chunhui [1 ,2 ,3 ]
Wang, Qin [1 ,2 ,3 ]
机构
[1] Nanjing Univ Posts & Telecommun, Inst Quantum Informat & Technol, Nanjing 210003, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Key Lab, Broadband Wireless Commun & Sensor Network Technol, Minist Educ, Nanjing 210003, Peoples R China
[3] Nanjing Univ Posts & Telecommun, Telecommun & Networks Natl Engn Res Ctr, Nanjing 210003, Peoples R China
基金
中国国家自然科学基金;
关键词
quantum key distribution; asymmetric MDI-QKD; advantage distillation technology; CRYPTOGRAPHY;
D O I
10.3390/e25081174
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Measurement-device-independent quantum key distribution (MDI-QKD) completely closes the security loopholes caused by the imperfection of devices at the detection terminal. Commonly, a symmetric MDI-QKD model is widely used in simulations and experiments. This scenario is far from a real quantum network, where the losses of channels connecting each user are quite different. To adapt such a feature, an asymmetric MDI-QKD model is proposed. How to improve the performance of asymmetric MDI-QKD also becomes an important research direction. In this work, an advantage distillation (AD) method is applied to further improve the performance of asymmetric MDI-QKD without changing the original system structure. Simulation results show that the AD method can improve the secret key rate and transmission distance, especially in the highly asymmetric cases. Therefore, this scheme will greatly promote the development of future MDI-QKD networks.
引用
收藏
页数:9
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