Title :
Multidimensional reconciliation for continuous-variable quantum key distribution
Author :
Leverrier, Anthony ; Alleaume, Romain ; Boutros, Joseph ; Zemor, Gilles ; Grangier, Philippe
Author_Institution :
TELECOM ParisTech, Paris
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;
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
DOI :
10.1109/ISIT.2008.4595141
