Field Demonstration of Quantum Key Distribution in the Tokyo QKD Network
Mikio Fujiwara, Hirokazu Ishizuka, Shigehito Miki, Taro Yamashita, Zhixin Wang, Akihiro Tanaka, K. Yoshino, Y. Nambu, Satoshi Takahashi, A. Tajima, Akihisa Tomita, T. Hasegawa, Toyohiro Tsurumaru, M. Matsui, Toshimori Honjo, Kiyoshi Tamaki, Y. Tokura, Masahide Sasaki · 2011
A secure communication network with novel quantum key distribution systems in a metropolitan area (very center of Tokyo) is reported. Different QKD schemes are integrated to demonstrate key relay for secure TV conferencing over a distance 45 km, stable long-term operation.