Multidimensional reconciliation for a continuous-variable quantum key distribution

Anthony Leverrier, Romain Alléaume, Joseph Boutros, Gilles Zémor, Philippe Grangier

Research output: Contribution to journalArticle

99 Citations (Scopus)

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 based on the algebraic properties of octonions. Since the protocol does not use any post-selection, it can be proven secure against arbitrary collective attacks by using well-established theorems on the optimality of Gaussian attacks. By using this coding scheme with an appropriate signal-to-noise ratio, the distance for a secure continuous-variable quantum key distribution can be significantly extended.

Original languageEnglish
Article number042325
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume77
Issue number4
DOIs
Publication statusPublished - 30 Apr 2008

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attack
coding
signal to noise ratios
theorems
modulation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Multidimensional reconciliation for a continuous-variable quantum key distribution. / Leverrier, Anthony; Alléaume, Romain; Boutros, Joseph; Zémor, Gilles; Grangier, Philippe.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 77, No. 4, 042325, 30.04.2008.

Research output: Contribution to journalArticle

Leverrier, Anthony ; Alléaume, Romain ; Boutros, Joseph ; Zémor, Gilles ; Grangier, Philippe. / Multidimensional reconciliation for a continuous-variable quantum key distribution. In: Physical Review A - Atomic, Molecular, and Optical Physics. 2008 ; Vol. 77, No. 4.
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