Generalized PPM-based BB84 QKD protocol

Author

Yequn Zhang ; Djordjevic, Ivan B.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA

fYear

2014

fDate

6-10 July 2014

Firstpage

1

Lastpage

4

Abstract

In this paper, we consider quantum key distribution (QKD) using pulse-position modulation (PPM) and propose the PPM-based BB84 QKD protocol. With the adoption of PPM, the efficiency of utilizing weak laser pulses can be improved and hence the key rate. We first analyse the potential of using PPM from the perspective of raw key rate. We then provide detailed description of the proposed protocol, the encoding rule of which has to be specifically designed in order to be secure. Lastly, we consider the intercept-resend and photon-number splitting attacks and analyse the secret key rate of the proposed QKD protocol. Our analysis shows that in high-loss channel, the proposed PPM-based BB84 protocol can achieve higher secret key rates compared to the conventional BB84 protocol.

Keywords

cryptographic protocols; encoding; private key cryptography; pulse position modulation; quantum cryptography; BB84 QKD protocol; encoding; generalized PPM; generalized pulse position modulation; high-loss channel; intercept-resend; laser pulses; photon-number splitting attacks; quantum key distribution; secret key rate; Data mining; Encoding; Lasers; Modulation; Photonics; Protocols; Security; Quantum key distribution; pulse-position modulation; secret key rate; weak laser pulse;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks (ICTON), 2014 16th International Conference on

Conference_Location

Graz

Type

conf

DOI

10.1109/ICTON.2014.6876373

Filename

6876373