The secure transmission criterion of practical polarization coding QKD systems under PNS attacks

Yan Chen; Hongyu Yang; Ke Deng; Zhoushi Yao

doi:10.1117/12.802703

19 November 2008 The secure transmission criterion of practical polarization coding QKD systems under PNS attacks

Yan Chen, Hongyu Yang, Ke Deng, Zhoushi Yao

Author Affiliations +

Proceedings Volume 7137, Network Architectures, Management, and Applications VI; 71372Z (2008) https://doi.org/10.1117/12.802703
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

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.

Citation Download Citation

Yan Chen, Hongyu Yang, Ke Deng, and Zhoushi Yao "The secure transmission criterion of practical polarization coding QKD systems under PNS attacks", Proc. SPIE 7137, Network Architectures, Management, and Applications VI, 71372Z (19 November 2008); https://doi.org/10.1117/12.802703

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