arXiv:0806.3954 [quant-ph]AbstractReferencesReviewsResources
Continuous-variable quantum key distribution protocols over noisy channels
Raul Garcia-Patron, Nicolas J. Cerf
Published 2008-06-24, updated 2009-06-25Version 2
A continuous-variable quantum key distribution protocol based on squeezed states and heterodyne detection is introduced and shown to attain higher secret key rates over a noisy line than any other one-way Gaussian protocol. This increased resistance to channel noise can be understood as resulting from purposely adding noise to the signal that is converted into the secret key. This notion of noise-enhanced tolerance to noise also provides a better physical insight into the poorly understood discrepancies between the previously defined families of Gaussian protocols.
Comments: Minor modifications to match published manuscript
Journal: Phys. Rev. Lett. 102, 130501 (2009)
Categories: quant-ph
Keywords: distribution protocol, continuous-variable quantum, noisy channels, one-way gaussian protocol, attain higher secret
Tags: journal article
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