Eavesdropping of two-way coherent-state quantum cryptography via Gaussian quantum cloning machines
Quantum Physics
2009-02-20 v1
Abstract
We consider one of the quantum key distribution protocols recently introduced in Ref. [Pirandola et al., Nature Physics 4, 726 (2008)]. This protocol consists in a two-way quantum communication between Alice and Bob, where Alice encodes secret information via a random phase-space displacement of a coherent state. In particular, we study its security against a specific class of individual attacks which are based on combinations of Gaussian quantum cloning machines.
Keywords
Cite
@article{arxiv.0901.3568,
title = {Eavesdropping of two-way coherent-state quantum cryptography via Gaussian quantum cloning machines},
author = {Stefano Pirandola and Stefano Mancini and Seth Lloyd and Samuel L. Braunstein},
journal= {arXiv preprint arXiv:0901.3568},
year = {2009}
}
Comments
Proceeding of ICQNM 2009, The Third International Conference on Quantum, Nano and Micro Technologies, Cancun, Mexico, 1-7 February 2009