Ming-Han Li

Quantum key distribution (QKD) has been proven to be an essential technology to resist the threat of quantum computing. Major technological powers such as the United States and countries in Europe have already begun the development of quantum key distribution networks. After years of technological research, China has further developed the operational-level 10,000-kilometre quantum secure communication network for business applications ‘China Quantum Communication Network’ (CN-QCN), developed based on ‘Shanghai-Beijing Backbone’. This report summarizes the advanced practices of CN-QCN in areas such as Backbone and　Metropolitan networks organization and network management. It also highlights several initiatives designed to enhance the network usability, proposes a method for evaluating the availability of quantum networks.