Paper Info
Title
Security of quantum key distribution with state-dependent imperfections
Abstract
In practical quantum key distribution system, the state preparation and measurement have state-dependent imperfections comparing with the ideal BB84 protocol. If the state-dependent imperfection can not be regarded as an unitary transformation, it should not be considered as part of quantum channel noise introduced by the eavesdropper, the commonly used secret key rate formula GLLP can not be applied correspondingly. In this paper, the unconditional security of quantum key distribution with state-dependent imperfections will be analyzed by estimating upper bound of the phase error rate in the quantum channel and the imperfect measurement. Interestingly, since Eve can not control all phase error in the quantum key distribution system, the final secret key rate under constant quantum bit error rate can be improved comparing with the perfect quantum key distribution protocol.
Year
Venue
Keywords
2011
Quantum Information & Computation
quantum key distribution system,practical quantum key distribution,secret key rate formula,quantum channel,quantum key distribution state-dependent imperfection security,state-dependent imperfection,perfect quantum key distribution,quantum key distribution,final secret key rate,quantum channel noise,constant quantum bit error,error rate,upper bound,quantum physics
Field
DocType
Volume
Quantum key distribution,Quantum mechanics,Quantum algorithm,Quantum cryptography,Quantum error correction,Amplitude damping channel,Quantum operation,Mathematics,Quantum capacity,Quantum network
Journal
11
Issue
ISSN
Citations 
11-12
1533-7146
0
PageRank 
References 
Authors
0.34
3
6
Name
Order
Citations
PageRank
Hongwei Li14713.04
Zhen-Qiang Yin284.93
Shuang Wang332.40
Wansu Bao476.02
Guangcan Guo5229.33
Zheng-Fu Han6134.99