Title :
Sagnac quantum key distribution using novel polarization-insensitive phase modulators based on frequency shift
Author :
Huang, Lei-Lei ; Qi, Bing ; Mong, Roger ; Li Qian ; Lo, Hoi-Kwong
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont.
Abstract :
We demonstrate a stable Sagnac quantum key distribution implementing BB84 phase-encoding protocol based on acousto-optic frequency shifters. The quantum bit error rate remains 4-6.5% for at least one hour without recalibration or feedback control
Keywords :
Sagnac interferometers; acousto-optical modulation; error statistics; optical communication equipment; optical fibre communication; phase coding; phase modulation; quantum cryptography; BB84 phase-encoding protocol; Sagnac quantum key distribution; acousto-optic frequency shifters; frequency shift; polarization-insensitive phase modulators; quantum bit error rate; Frequency shift keying; Interference; Optical control; Optical fiber polarization; Optical pulse generation; Phase modulation; Protocols; Pulse modulation; Quantum computing; Sagnac interferometers;
Conference_Titel :
LEOS Summer Topical Meetings, 2006 Digest of the
Conference_Location :
Quebec City, Que.
Print_ISBN :
1-4244-0090-2
DOI :
10.1109/LEOSST.2006.1693999
