A Security Proof of Measurement Device Independent Quantum Key Distribution： From the View of Information Theory  

作　　者：李芳毅 银振强 李宏伟 陈巍 王双 温浩 赵义博 韩正甫 

机构地区：[1]Key Lab of Quantum Information, University of Science and Technology of China, Hefei 230026 [2]Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026 [3]Information Engineering College, Zhejiang University of Technology, Hangzhou 310023 [4]Anhui Qasky Quantum Science and Technology Co. Ltd., Wuhu 241002

出　　处：《Chinese Physics Letters》2014年第7期16-19,共4页中国物理快报（英文版）

基　　金：Supported by the Chinese Academy of Sciences, the National Basic Research Program of China under Grants Nos 2011CBA00200 and 2011CB921200, the National Natural Science Foundation of China under Grants Nos 61101137 and 61201239, the Program for Zhejiang Leading Team of Science and Technology Innovation under Grant No 2012r10011-12, and the Special Foundation for Young Scientists of Zhejiang Province under Grant No LQ13F050005.

摘　　要：Although some ideal quantum key distribution protocols have been proved to be secure, there have been some demonstrations that practical quantum key distribution implementations were hacked due to some real-life imperfections. Among these attacks, detector side channel attacks may be the most serious. Recently, a measurement device independent quantum key distribution protocol [Phys. Rev. Lett. 108 （2012） 130503] was proposed and all detector side channel attacks are removed in this scheme. Here a new security proof based on quantum information theory is given. The eavesdropper＇s information of the sifted key bits is bounded. Then with this bound, the final secure key bit rate can be obtained.Although some ideal quantum key distribution protocols have been proved to be secure, there have been some demonstrations that practical quantum key distribution implementations were hacked due to some real-life imperfections. Among these attacks, detector side channel attacks may be the most serious. Recently, a measurement device independent quantum key distribution protocol [Phys. Rev. Lett. 108 （2012） 130503] was proposed and all detector side channel attacks are removed in this scheme. Here a new security proof based on quantum information theory is given. The eavesdropper＇s information of the sifted key bits is bounded. Then with this bound, the final secure key bit rate can be obtained.

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术] O413[自动化与计算机技术—计算机科学与技术]