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IEICE Technical Report; IEICE Tech. Rep.

A field test of high-speed wavelength-division multiplexing quantum key distribution system

Yoshino Ken-ichiro, Fujiwara Mikio, Akihiro Tanaka, Seigo Takahashi, Yoshihiro Nambu, Tomita Akihisa, Shigehito Miki, Taro Yamashita, Zhen Wang, Masahide Sasaki, Akio Tajima

Published Jan 19, 2012• 0 citations
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Quantum key distribution (QKD) systems can generate unconditionally secure common keys between remote users. Improvements of QKD performance, particularly in key generation rate, have been required to meet current network traffic. A high-speed QKD system should be equipped with low-loss receivers with high visibility, highly efficient photon detectors with small dark count probability. A solution to these issues is to employ planar lightwave circuit (PLC) interferometers, single photon detection circuits and modules, together with multi-wavelength channels transmission using wavelength division multiplexing (WDM) technique.