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Plug & Play quantum cryptography system  

Lee, Kyung-Woon (Korea University, Korea Institute of Science and Technology)
Park, Chul-Woo (Korea Institute of Science and Technology)
Park, Jun-Bum (Korea Institute of Science and Technology)
Lee, Seung-Hun (Korea Institute of Science and Technology)
Shin, Hyun-Jun (Korea Institute of Science and Technology)
Park, Jung-Ho (Korea University)
Moon, Sung-Wook (Korea Institute of Science and Technology)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.44, no.3, 2007 , pp. 45-50 More about this Journal
Abstract
We present a auto compensating quantum key distribution system based on optical fiber at 1550nm. In the quantum key transmission system, main control board and phase modulation driving board are fabricated for auto controlling quantum key distribution(QKD). We tested the single photon counts per dark counts for a single photon detector, quantum key distribution rate($R_{sift}$) and the quantum bit error rate (QBER). Quantum bit error rate of 3.5% in 25km QKD is obtained. This system is commercially available.
Keywords
Quantum cryptography; Single photon detection; Quantum key distribution; Quantum bit error rate;
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