An analysis of the eavesdropping threshold of quantum cryptography protocol

Author

Nan, Zhao ; Chang-xing, Pei

Author_Institution

State Key Lab. of Integrated Services Networks, Xidian Univ., Xi´´an, China

fYear

2011

fDate

16-18 April 2011

Firstpage

3913

Lastpage

3916

Abstract

This paper establishes a channel model by analyzing various factors which affect the quantum state in the process of practical quantum communication, and derives, through calculation and simulation, a new formula for a safety threshold of eavesdropping discrimination by the BB84 Protocol. This formula can be used to estimate the safety communication threshold of the BB84 Protocol in non-ideal channels. The method for estimating the practical safety thresholds can decide more accurately whether or not eavesdropping exists in the process of quantum cipher key distribution, thus raising the safety and efficiency of communication process.

Keywords

cryptographic protocols; quantum cryptography; BB84 protocol; channel model; eavesdropping threshold; quantum cipher key distribution; quantum communication; quantum cryptography protocol; Communication channels; Mean square error methods; Measurement uncertainty; Noise; Protocols; Quantum mechanics; Safety; BB84 Protocol; bit error rate; channel model; safety threshold;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on

Conference_Location

XianNing

Print_ISBN

978-1-61284-458-9

Type

conf

DOI

10.1109/CECNET.2011.5768168

Filename

5768168