Using testbed “Tokyo QKD Network”, a video conference with quantum cryptography at Tokyo metropolitan area was succeed for the first time in the world. Since then, NICT has been conducting various technical demonstrations of quantum key distribution in collaboration with industry, universities, and research institutions. Furthermore, NICT expand quantum key distribution networks in Japan. These networks will be used as open testbeds. Everyone in industry, universities, and research institutions will be able to use them after concluding a joint research agreement with NICT.

The available links in Tokyo QKD network are as follows.