Title :
A 1550 nm single-photon detector for long-distance fiber-optic quantum cryptography
Author :
Yoshizawa, A. ; Tsuchida, H.
Author_Institution :
Agency of Ind. Sci. & Technol., Ibaraki, Japan
Abstract :
We report a thermoelectrically cooled gated-mode single-photon detector operating at 1550 nm. The obtained quantum efficiency (/spl sim/11.6%) and the dark count probability (/spl sim/2/spl times/10/sup -5/) per gate makes it possible to realize long-distance fiber-optic quantum cryptography with a small quantum bit-error rate.
Keywords :
avalanche photodiodes; optical fibre communication; photodetectors; photon counting; quantum cryptography; 1550 nm; avalanche photodiodes; dark count probability; fiber-optic quantum cryptography; gated-mode detector; long-distance quantum cryptography; quantum efficiency; reverse bias voltage; secure key distribution; single-photon detector; small quantum bit-error rate; thermoelectrically cooled detector; Bit error rate; Breakdown voltage; Cryptography; Detectors; Indium gallium arsenide; Optical pulse generation; Optical pulses; Pulse measurements; Q measurement; Thermoelectricity;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.971009
