Reconciliation of a Quantum-Distributed Gaussian Key
Abstract
Two parties, Alice and Bob, wish to distill a binary secret key out of a list of correlated variables that they share after running a quantum key distribution protocol based on continuous-spectrum quantum carriers. We present a novel construction that allows the legitimate parties to get equal bit strings out of correlated variables by using a classical channel, with as few leaked information as possible. This opens the way to securely correcting non-binary key elements. In particular, the construction is refined to the case of Gaussian variables as it applies directly to recent continuous-variable protocols for quantum key distribution.
Cite
@article{arxiv.cs/0107030,
title = {Reconciliation of a Quantum-Distributed Gaussian Key},
author = {G. Van Assche and J. Cardinal and N. J. Cerf},
journal= {arXiv preprint arXiv:cs/0107030},
year = {2007}
}
Comments
8 pages, 4 figures. Submitted to the IEEE for possible publication. Revised version to improve its clarity