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11 January 2005 Two-point attack on the two nonorthogonal states QKD protocol over a fiber optic channel
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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.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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