Continuous-Variable Quantum Key Distribution Protocols Over Noisy Channels
Name
Garcia-Patron-2009-Continuous-Variable.pdf
Size
186.05 KB
Format
Adobe PDF
Checksum (MD5)
f4019cb689386ad9d2a1735fc4e6a9e4
Author(s)
Cerf, Nicolas J.
Garcia-Patron Sanchez, Raul
Date Issued
March 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
García-Patrón, Raúl , and Nicolas J. Cerf. “Continuous-Variable Quantum Key Distribution Protocols Over Noisy Channels.” Physical Review Letters 102.13 (2009): 130501. © 2009 The American Physical Society.
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.102.130501
