Phys. Rev. Lett. 93, 170502 (2004) [4 pages]Security of Quantum Key Distribution with Coherent States and Homodyne DetectionReceived 11 July 2003; published 19 October 2004 We assess the security of a quantum key distribution protocol relying on the transmission of Gaussian-modulated coherent states and homodyne detection. This protocol is shown to be equivalent to an entanglement purification protocol using CSS codes followed by key extraction, and is thus secure against any eavesdropping strategy. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.170502
DOI:
10.1103/PhysRevLett.93.170502
PACS:
03.67.Dd, 03.67.Hk
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