会议专题

The Secure Transmission Criterion of Practical Polarization Coding QKD Systems under PNS Attacks

After over twenty years since the demonstration of the first QKD systems in 1989 there have been two categories of QKD systems, namely fiber QKD systems and wireless QKD systems. The security of a practical QKD system over wireless optical paths is degraded due to imperfectness of devices and channel loss. Very simple attacks, such as beamsplitting attacks (BS), could jeopardize the security of polarization coding QKD systems. Among all the attacks photon number splitting (PNS) is the most threatening one against the security of polarization coding QKD systems. The upper bound for secure transmission length of free-space QKD systems based on polarization coding under PNS attacks is provided here as well as the secure transmission criterion. The theoretic results predicted in this paper accord with experimental results of Manderbach’s work.

quantum cryptography free-space QKD systems PNS attacks secure transmission length

Yan Chen Hongyu Yang Ke Deng Zhoushi Yao

Institute of Astronautics and Aeronautics,University of Electronic Science and Technology ofChina,14 College of Automation,University of Electronic Science and Technology of China,14 NorthJianshe Road Institute of Astronautics and Aeronautics,University of Electronic Science and Technology of China,1

国际会议

2008亚太光通信会议(Asia-Pacific Optical Communications 2008)

杭州

英文

2008-10-26(万方平台首次上网日期,不代表论文的发表时间)