2006/05/31 by Guangqiang He, He Guang-Qiang, Jun Zhu +2
Computer Science · Physics and Astronomy · #Basis (linear algebra) #Beam splitter #Continuous variable #Distribution (mathematics) #Fidelity #High fidelity #Key (lock) #Laser-Matter Interactions and Applications #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum key distribution #Scheme (mathematics) #quant-ph
paper · pdf · doi:10.1088/1009-1963/15/6/025
7 pages, 4figures
openalex publication_date 2006/05/31 · arxiv created 2006/11/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
This paper proposes a deterministic quantum key distribution scheme based on Gaussian-modulated continuous variable EPR correlations. This scheme can implement fast and efficient key distribution. The security is guaranteed by continuous variable EPR entanglement correlations produced by nondegenerate optical parametric amplifier. For general beam splitter eavesdropping strategy, the secret information rate Δ I = I (α,β)− I (α, ) is calculated in view of Shannon information theory. Finally the security analysis is presented.