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Proceedings Paper

Two-point attack on the two nonorthogonal states QKD protocol over a fiber optic channel
Author(s): Li Yang; Ling-An Wu
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Paper Abstract

We suggest here a two-point eavesdropping strategy aimed at a two nonorthogonal states protocol of quantum key distribution over a fiber-optic channel. When the single-photon sources and detectors of Alice, Bob and the two Eve are all ideal, the two-point attack can break the two nonorthogonal states protocol if the distance between Alice and Bob is longer than 30 km. However, Bennett's original multi-photon protocol is secure against both two-point and beam splitting attacks, though the protocol is realized with a weak pulsed source.

Paper Details

Date Published: 11 January 2005
PDF: 4 pages
Proc. SPIE 5631, Quantum Optics and Applications in Computing and Communications II, (11 January 2005); doi: 10.1117/12.574313
Show Author Affiliations
Li Yang, Graduate School of Chinese Academy of Sciences (China)
Ling-An Wu, Institute of Physics, CAS (China)


Published in SPIE Proceedings Vol. 5631:
Quantum Optics and Applications in Computing and Communications II
Guang-Can Guo; Hoi-Kwong Lo; Masahide Sasaki; Songhao Liu, Editor(s)

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