Rémi Blandino, Anthony Leverrier, Marco Barbieri, Jean Etesse, Philippe Grangier, Rosa Tualle-Brouri
We show that the maximum transmission distance of continuous-variable quantum key distribution in presence of a Gaussian noisy lossy channel can be arbitrarily increased using a linear noiseless amplifier. We explicitly consider a protocol using amplitude and phase modulated coherent states with reverse reconciliation. We find that a noiseless amplifier with amplitude gain g can increase the maximum admissible losses by a factor 1/g^2.
View original:
http://arxiv.org/abs/1205.0959
No comments:
Post a Comment