Multidimensional reconciliation for continuous-variable quantum key distribution

Author

Leverrier, Anthony ; Alleaume, Romain ; Boutros, Joseph ; Zemor, Gilles ; Grangier, Philippe

Author_Institution

TELECOM ParisTech, Paris

fYear

2008

fDate

6-11 July 2008

Firstpage

1020

Lastpage

1024

Abstract

We propose a method for extracting an errorless secret key in a continuous-variable quantum key distribution protocol, which is based on Gaussian modulation of coherent states and homodyne detection. The crucial feature is an eight-dimensional reconciliation method, relying on the algebraic properties of octonions. By using this coding scheme with an appropriate signal-to-noise ratio, the distance for secure continuous-variable quantum key distribution can be significantly extended.

Keywords

Gaussian channels; homodyne detection; protocols; quantum cryptography; 8D reconciliation method; Gaussian modulation; algebraic properties; coding scheme; coherent states; continuous-variable distribution; errorless secret key; homodyne detection; multidimensional reconciliation; protocol; quantum key distribution; Channel capacity; Computer vision; Data mining; Decoding; Linear code; Multidimensional systems; Protocols; Quantum computing; Random variables; Telecommunications;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2008. ISIT 2008. IEEE International Symposium on

Conference_Location

Toronto, ON

Print_ISBN

978-1-4244-2256-2

Electronic_ISBN

978-1-4244-2257-9

Type

conf

DOI

10.1109/ISIT.2008.4595141

Filename

4595141