Continuous-Variable Quantum Key Distribution Protocols Over Noisy Channels
Author(s)Cerf, Nicolas J.; Garcia-Patron Sanchez, Raul
MetadataShow full item record
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.
DepartmentMassachusetts Institute of Technology. Research Laboratory of Electronics
Physical Review Letters
American Physical Society
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.
Final published version