The new system of ground-space fiber-optic communications will connect Moscow and Beijing with a line of absolutely secure quantum communication. In comparison with conventional methods of transmitting information, quantum networks have one undeniable advantage: they are protected from third-party reading.
During an online Roscongress Foundation session, Chinese professor Xiu Feihu, from the University of Science and Technology of China, announced plans to expand the communication network between Russia and China. The Foundation was established in 2007 with the aim of facilitating the development of Russia’s economic potential, promoting its national interests, and strengthening the country’s image. One of the roles of the Foundation is to comprehensively evaluate, analyze, and cover issues on the Russian and global economic agendas.
The new system of ground-space fiber-optic communications will connect Moscow and Beijing with a line of absolutely secure quantum communication. Chinese scientists plan to create it in the next five years.
“In the near future, we plan to expand our quantum communication network to the entire territory of China, and in the medium term, in the next five years, we plan to go beyond it. In particular, we plan to build a secure ground-space communication system that will connect Beijing and Moscow,” said Xiu Feihu.
Even though the system will be operational within five years, it would take 10 years for it to be perfected.
On the other hand, it is possible to increase the transmission distance of quantum information by exchanging data via communication satellites rather than ground-based fiber-optic cables. In particular, back in September 2016, Xu Feihu and his colleagues launched a similar device, the Mo-Tzu orbital probe, and successfully used it to conduct the first “Intercontinental” sessions of secure quantum communication.
The Mo-Tzu satellite provided quantum communication at a record distance of up to 1,203 kilometers, which is 12 times more than in previous experiments. In January 2020, China lunched the first mobile quantum satellite, the first mobile station to communicate with a satellite via a channel protected by quantum cryptography methods.