Asymptotic security of binary modulated continuous-variable quantum key distribution under collective attacks

2008/07/23 by Yi-Bo Zhao, Zhao Yi-Bo, Matthias Heid +2 · 4 citations
Computer Science · Mathematics · Physics and Astronomy · #Arithmetic #Binary number #Computer science #Computer security #Continuous variable #Encryption #Ideal (ethics) #Key (lock) #Key distribution #Law #Mathematical analysis #Mathematical optimization #Mathematics #Physics #Protocol (science) #Public-key cryptography #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum key distribution #Quantum mechanics #Statistical physics #Theoretical computer science #Variable (mathematics) #quant-ph

paper · pdf · doi:10.1103/physreva.79.012307

16 pages, 2 figures

arxiv created 2008/07/23 · openalex publication_date 2009/01/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We estimate a lower bound to the secret key rate of a binary modulated continuous variable quantum key distribution scheme. We consider the collective attack scenario with quantum channels that impose arbitrary noise on the exchanged signals. The analysis is done in the infinite key limit. Bob performs ideal homodyne measurements on the received states and the two honest parties employ a reverse reconciliation procedure in the classical postprocessing step of the protocol.

Citations

• Quantum key distribution using gaussian-modulated coherent states
• Information-theoretic security proof for quantum-key-distribution protocols
• A Mathematical Theory of Communication
• Distillation of secret key and entanglement from quantum states
• Quantum cryptography using pulsed homodyne detection
• Efficiency of coherent state quantum cryptography in the presence of loss: Influence of realistic error correction
• Testing quantum devices: Practical entanglement verification in bipartite optical systems

Cited by

• Teleportation-based continuous variable quantum cryptography
• Binary homodyne detection for observing quadrature squeezing in satellite links
• Secure quantum key distribution with realistic devices
• Asymptotic security of discrete-modulation protocols for continuous-variable quantum key distribution