At present, quantum communication is the only communication method that has been strictly proved unconditionally and safely. The “Beijing-Shanghai Railway†project is China's 1,000-kilometer high-confidence and scalable inter-city optical fiber quantum communication network. It was approved by the National Development and Reform Commission in July 2013. The project was unified and led by the Chinese Academy of Sciences, and the University of Science and Technology of China was undertaken as the main body of the project construction. The “Beijing-Shanghai Railway†will also be used for the secure transmission of information in the fields of finance and government affairs.
The world's first quantum security communication trunk line - "Beijing-Shanghai trunk line" officially opened on the 29th, combined with the "Mozi" satellite, Chinese scientists successfully achieved the world's first intercontinental quantum security communication with Austria. This indicates that China has constructed a prototype of a wide-area quantum communication network.
At present, quantum information has risen to a national strategy, and the state is speeding up the deployment of technological innovation 2030- major project "Quantum Communication and Quantum Computer" to form a national laboratory in the field of quantum information. According to him, the Chinese Academy of Sciences has included quantum communication as a strategic area for the “first action†strategy, and strived to make major breakthroughs in the practical application of quantum communication technology by 2020 and continue to maintain its leading position in the world.
In the Beijing-Shanghai trunk line Beijing Control Center, Bai Chunli, president of the Chinese Academy of Sciences, used the quantum-encrypted video conferencing system on the afternoon of the 29th to successfully talk with Hefei, Jinan, Shanghai and Xinjiang.
Subsequently, Bai Chunli passed the "Mozi" quantum science experimental satellite, and the world's first intercontinental quantum security communication video call with the Austrian Academy of Sciences President Anton Salinger. In the call, Salinger congratulated China on the achievements in the field of quantum communication and hoped to further strengthen scientific research cooperation between the two countries.
Since its establishment in 2013, the “Beijing-Shanghai Railway†project team has broken through the key technologies of high-speed quantum key distribution, high-speed and high-efficiency single-photon detection, trusted relay transmission and large-scale quantum network management and control. At present, the 2,000-kilometer-long quantum security communication backbone line connecting Beijing, Jinan, Hefei and Shanghai has been fully connected, and the connection with the “Mozi†has been realized through the Beijing access point, achieving quantum security covering the whole world in the future. The communication network has taken a solid step.
It is understood that the key rate of the "Beijing-Shanghai trunk line" line is greater than 20 kilobits per second (kbps), which can meet the key distribution business needs of tens of thousands of users, and has realized the Beijing, Shanghai, Jinan, Hefei, Urumqi Nanshan ground station and Intercontinental Quantum Communication Video Conference between the Austrian Academy of Sciences at 6 o'clock. Through this line, Bank of Communications, Industrial and Commercial Bank of China, and Alibaba Group have also realized applications such as quantum encryption transmission of data from Beijing and Shanghai.
Academician Pan Jianwei, the chief scientist of the "Beijing-Shanghai Trunk Line" project, said that quantum communication is the only communication method that has been strictly proved unconditionally and safely. In the future, based on the "Beijing-Shanghai trunk line", large-scale application of quantum communication will be promoted, and complete quantum communication will be established. The industrial chain and the next-generation national sovereign information security ecosystem will eventually build a quantum Internet based on quantum communication security.
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