Security evaluation of the quantum key distribution system with two-mode squeezed states

Journal Article · Fri Aug 01 00:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.68.022325· OSTI ID:20640041

Osaki, M ^[1]; Ban, M ^[2]

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1. Research Center for Quantum Communications, Tamagawa University, 6-1-1, Tamagawagakuen, Machida, Tokyo 194-8610, (Japan)
2. Advanced Research Laboratory, Hitachi, Ltd., 2520, Akanuma, Hatoyama, Saitama 350-0395, (Japan)

The quantum key distribution (QKD) system with two-mode squeezed states has been demonstrated by Pereira et al. [Phys. Rev. A 62, 042311 (2000)]. They evaluate the security of the system based on the signal to noise ratio attained by a homodyne detector. In this paper, we discuss its security based on the error probability individually attacked by eavesdropper with the unambiguous or the error optimum detection. The influence of the energy loss at transmission channels is also taken into account. It will be shown that the QKD system is secure under these conditions.

• OSTI ID: 20640041
• Journal Information: Physical Review. A, Vol. 68, Issue 2; Other Information: DOI: 10.1103/PhysRevA.68.022325; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CORRELATIONS
DATA TRANSMISSION
DETECTION
DISTRIBUTION
ENERGY LEVELS
ENERGY LOSSES
ERRORS
EVALUATION
PROBABILITY
QUANTUM MECHANICS
SECRECY PROTECTION
SIGNAL-TO-NOISE RATIO
STATISTICS