Ultra-fast differential-phase-shift quantum key distribution using single-photon detectors based on up-conversion in periodically poled lithium niobate waveguides

Author

Takesue, H. ; Honjo, T. ; Inoue, K. ; Diamanti, E. ; Langrock, C. ; Fejer, M.M. ; Yaniamoto, Y.

Author_Institution

NTT Basic Res. Laboratories, NTT Corp., Atsugi

fYear

2006

fDate

5-10 March 2006

Abstract

We report a differential-phase-shift quantum key distribution experiment in which we employed single photon detectors based on frequency up-conversion in periodically poled lithium niobate waveguides. We achieved a shifted key rate of 1 Mbit/s over 30 km of optical fiber, which is two orders of magnitude larger than the previous record

Keywords

differential phase shift keying; lithium compounds; optical fibre communication; optical frequency conversion; optical modulation; optical waveguides; photodetectors; quantum cryptography; 1 Mbit/s; 30 km; LiNbO₃; frequency up-conversion; periodically poled lithium niobate waveguides; single-photon detectors; ultrafast differential-phase-shift quantum key distribution; Detectors; Frequency; Indium gallium arsenide; Laboratories; Lithium niobate; Optical fibers; Optical waveguides; Phase detection; Protocols; Pulse modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Fiber Communication Conference, 2006 and the 2006 National Fiber Optic Engineers Conference. OFC 2006

Conference_Location

Anaheim, CA

Print_ISBN

1-55752-803-9

Type

conf

DOI

10.1109/OFC.2006.216005

Filename

1637036