Quantum secure communication (QSC) based on quantum key distribution (QKD) is one of the promising solutions for improving the network information security in the future. In last decade, frontier research, demonstrational application, and network construction ofQSChave developed rapidly, the level of industrialization has been determined improved. Recently, the practical security issues of QSC system and network have caused widespread concern and discussion in academia, industry and public opinion. In this paper, the practical security issues of QSC systems and networks are analyzed, the prospects ofQSCapplicationand relevant strategies are discussed.
At present, the main obstacle to China's high-quality economic development is the structural contradiction, which is the structure mismatch of supply and demand. Digital technology is changing every day, and its application potential is bursting into full release. By improving production efficiency, eliminating excess capacity, reducing supply cost and enhancing innovation capacity, digital economy will promote effective supply capacity. By expanding traditional demand, enriching emerging demand, and promoting demand upgrading, digital economy will drive an appropriate expansion of total demand. To deepen China's supply and demand structure reform, we should strengthen top-level design, give full play to the innovative of the digital economy, consolidate the foundation for the development of digital industrialization, deepen the integration of the digitaleconomyin various fields, and build an open and inclusive environment.