Abstract

Quantum communication, based on the quantum physics, can provide information theoretical security. The gap between ideal devices and realistic setups, however, has raised various security loopholes, which have become the targets of many attacks and obstacles against its deployment and applications. I shall review the various efforts towards secure QKD system with practical devices over the society. Then I shall provide details about the deployed quantum communication systems in China, including metropolitan, backbone and satellite based international network, the technology challenging, the performance and an outlook.

© 2018 The Author(s)