Two-point attack on the two nonorthogonal states QKD protocol over a fiber optic channel

Li Yang; Ling-An Wu

doi:10.1117/12.574313

11 January 2005 Two-point attack on the two nonorthogonal states QKD protocol over a fiber optic channel

Li Yang, Ling-An Wu

Proceedings Volume 5631, Quantum Optics and Applications in Computing and Communications II; (2005) https://doi.org/10.1117/12.574313
Event: Photonics Asia, 2004, Beijing, China

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.

Citation Download Citation

Li Yang and Ling-An Wu "Two-point attack on the two nonorthogonal states QKD protocol over a fiber optic channel", Proc. SPIE 5631, Quantum Optics and Applications in Computing and Communications II, (11 January 2005); https://doi.org/10.1117/12.574313

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