Decoy state quantum key distribution with modified coherent state

Journal Article · Sun Jul 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.014304· OSTI ID:21011337

Zhenqiang, Yin; Zhengfu, Han; Fangwen, Sun; Guangcan, Guo ^[1]

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1. Key Lab of Quantum Information, CAS, USTC (China)

To beat photon-number splitting attack, decoy state quantum key distribution (QKD) based on the coherent state has been studied widely. We present a decoy state QKD protocol with a modified coherent state (MCS). By destructive quantum interference, a MCS with fewer multiphoton events can be obtained, which may improve the key bit rate and security distance of QKD. Through numerical simulation, we show about a 2-dB increment on the security distance for Bennett-Brassard (1984) protocol.

• OSTI ID: 21011337
• Journal Information: Physical Review. A, Vol. 76, Issue 1; Other Information: DOI: 10.1103/PhysRevA.76.014304; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EIGENSTATES
INTERFERENCE
MULTI-PHOTON PROCESSES
NUMERICAL ANALYSIS
PHOTONS
QUANTUM COMPUTERS
QUANTUM CRYPTOGRAPHY
QUANTUM MECHANICS
SECURITY
SIMULATION