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arXiv · 1003.4621

Experimental demonstration of counterfactual quantum key distribution

Min Ren·Guang Wu·E Wu·Heping Zeng
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Abstract

Counterfactual quantum key distribution provides natural advantage against the eavesdropping on the actual signal particles. It can prevent the photon-number-splitting attack when a weak coherent light source is used for the practical implementation. We realized the counterfactual quantum key distribution in an unbalanced Mach-Zehnder interferometer of 12.5-km-long quantum channel with a high-fringe visibility of 96:4%. As a result, we obtained secure keys against the noise-induced attack (eg. the vacuum attack) and passive photon-number-splitting attack.

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Min Ren, Guang Wu, E Wu, Heping Zeng. 2010-03-24. Experimental demonstration of counterfactual quantum key distribution. https://doi.org/10.1134/s1054660x11070267

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