Security analysis of continuous-variable quantum key distribution scheme
Zhu Jun(朱俊)†, He Guang-Qiang(何广强), and Zeng Gui-Hua(曾贵华)
The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems, Electronic Engineering Department, Shanghai Jiaotong University, Shanghai 200240, China
Abstract In this paper security of the quantum key distribution scheme using correlations of continuous variable Einstein--Podolsky--Rosen (EPR) pairs is investigated. A new approach for calculating the secret information rate $\Delta I$ is proposed by using the Shannon information theory. Employing an available parameter F which is associated with the entanglement of the EPR pairs, one can detect easily the eavesdropping. Results show that the proposed scheme is secure against individual beam splitter attack strategy with a proper squeeze parameter.
Received: 26 July 2006
Revised: 27 October 2006
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 60472018).
Cite this article:
Zhu Jun(朱俊), He Guang-Qiang(何广强), and Zeng Gui-Hua(曾贵华) Security analysis of continuous-variable quantum key distribution scheme 2007 Chinese Physics 16 1364
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
