Phys. Rev. A 63, 036301 (2001) [2 pages]

Comment on “Quantum key distribution without alternative measurements” [Phys. Rev. A 61, 052312 (2000)]

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Yong-Sheng Zhang, Chuan-Feng Li^*, and Guang-Can Guo^†
Laboratory of Quantum Communication and Quantum Computation and Department of Physics, University of Science and Technology of China, Hefei 230026, People’s Republic of China

Received 11 September 2000; published 13 February 2001

In a recent paper [A. Cabello, Phys. Rev. A 61, 052312 (2000)], a quantum key distribution protocol based on entanglement swapping was proposed. However, in this Comment, it is shown that this protocol is insecure if Eve uses a special strategy to attack.

URL:

http://link.aps.org/doi/10.1103/PhysRevA.63.036301

DOI:

10.1103/PhysRevA.63.036301

PACS:

03.67.Dd, 03.67.Hk, 03.65.Ud

^*Electronic address: cfli@ustc.edu.cn

^†Electronic address: gcguo@ustc.edu.cn

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Phys. Rev. A 63, 036301 (2001) [2 pages]

Comment on “Quantum key distribution without alternative measurements” [Phys. Rev. A 61, 052312 (2000)]

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