Title :
Influence of avalanche-photodiode dead time on the security of high-speed quantum-key distribution systems
Author :
Xu, Hai ; Ma, Lijun ; Bienfang, Joshua C. ; Tang, Xiao
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD
Abstract :
We study the correlation in the shifted key induced by the dead time of Geiger-mode avalanche photodiodes (APDs) in quantum cryptographic systems. A simultaneous hold-off of the APDs (SHA) technique eliminates these correlations.
Keywords :
avalanche photodiodes; high-speed optical techniques; optical correlation; optical fibre networks; quantum cryptography; APD; Geiger-mode avalanche photodiode; avalanche-photodiode dead time; high-speed quantum-key distribution system; quantum cryptographic system; short-distance fiber networks; Avalanche photodiodes; Bars; Breakdown voltage; Extinction ratio; Optical fiber LAN; Optical fiber communication; Optical fiber polarization; Personal communication networks; Protocols; Security; (040.5570) Quantum detectors; (060.2330) Fiber Optics Communications;
Conference_Titel :
Lasers and Electro-Optics, 2006 and 2006 Quantum Electronics and Laser Science Conference. CLEO/QELS 2006. Conference on
Conference_Location :
Long Beach, CA
Print_ISBN :
978-1-55752-813-1
Electronic_ISBN :
978-1-55752-813-1
DOI :
10.1109/CLEO.2006.4628713
