Title :
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
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;
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
DOI :
10.1109/OFC.2006.216005
