1、1/33Preliminary Study of Advanced Technologiestowards 6G Era:QITs20212/33Executive SummaryWith the large-scale commercialization of 5G in 2021,the global industry has witnessed astarting of exploration and research on the 6th generation(6G)communication systems.6G willbuild a new type of network tha

2、t is intelligently and efficiently interconnected between humans,machine and things.On the basis of greatly improving the network capability,it has new functionssuch as endogenous intelligence,multi-dimensional perception,digital twin,endogenous networksecurity and so on.With the in-depth research o

3、n 6G network and key technologies,its integrationand application with Quantum Information Technologies(QITs)will become the focus in thefuture.In 6G era,the importance of cybersecurity in mobile communications is expected to riseexponentially.Quantum cryptography has emerged as a potential solution

4、for safeguarding criticalinformation because it is impossible to copy data encoded in a quantum state.In the first part,thiswhite paper gives an overview of Quantum Secure Communication.Starting with enablingtechnologies of quantum key distribution(QKD),standardization activities for QKD and itsnetw

5、orking technologies are presented,followed by implications of QKD for 6G.In particular,two typical applications scenarios are introduced.One is the quantum encryption system that willbe applied to the construction of Winter Olympics Smart Park and Xiongan New Area.The otheris in Xiongan quantum comm

6、unication pilot,where a quantum communication trunk linebetween Beijing and Xiongan will be deployed,and a quantum key distribution platform will beintroduced to provide security keys for customers in the fields of Internet of things,Internet ofvehicles,smart energy,smart government and so on.The pr