Decoy state protocols for quantum cryptography with parametric down conversion sources

Author

Ma, Xiongfeng ; Fung, Chi-Hang Fred ; Lo, Hoi-Kwong

Author_Institution

Univ. of Toronto, Toronto

fYear

2007

fDate

17-22 June 2007

Firstpage

1

Lastpage

1

Abstract

In this paper, we show that decoy states are very simple to implement for quantum key distribution (QKD) with parametric down conversion (PDC) sources. Indeed, with no modification in the hardware at all, by using the AYKI scheme, one can achieve a key generation rate that is close to the theoretical limit of infinite decoy states. Therefore, we expect decoy state QKD to become a standard technique not only in the coherent state QKD, but also in QKD with PDC sources.

Keywords

cryptographic protocols; optical communication; optical frequency conversion; quantum cryptography; quantum optics; AYKI scheme; PDC sources; QKD; coherent state; decoy state protocols; parametric down conversion; quantum cryptography; quantum key distribution; Cryptographic protocols; Cryptography; Distributed computing; Hardware; Optical computing; Optical control; Physics computing; Proposals; Quantum computing; Security;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-0931-0

Electronic_ISBN

978-1-4244-0931-0

Type

conf

DOI

10.1109/CLEOE-IQEC.2007.4387001

Filename

4387001