Professor of Chinese University of Science and Technology: China's quantum communication technology has taken the lead in the world

Chen Yuqi, a professor at the University of Science and Technology of China, said at the National Conference on Quantum Mechanics in China on August 20th that "China's quantum communication technology has taken the lead in the world."

In 2016, the world's first quantum-secure communication trunk line, the “Beijing-Shanghai trunk line”, was completed across the entire line, with a total length of more than 2,000 kilometers. In August 2016, the world's first quantum science experimental satellite named after the “Mozi No.” was successfully launched. Attracting the world's scientific and technological circles; recently, China's first commercial quantum communication network - Shandong Jinan Party and Government organs quantum communication network completed the test, is expected to be officially put into use at the end of August this year ...

"The 21st century is the century of life science and the century of quantum science." Zhang Yongde, a professor at the University of Science and Technology of China, said at the meeting that combining quantum mechanics and communication can bring advantage of quantum mechanics and ensure information security.

"The past current flow anti-interference ability is strong, like a mischievous little boy, you say a few words, he does not care." Zhang Yongde said that the microscopic particles are very small, very fragile, like a shy little girl, you Look at her and it will change. It is such a characteristic that can be kept secret. Once the eavesdropper touches the information, it will change its state. The communicator will find that the state of the information changes and can respond in time. "Quantum entanglement and quantum state are inherently able to protect communication security."

Wang Xiangbin, a professor at Tsinghua University, also believes that "quantum communication can achieve unconditional security." In November 2016, a joint team of Chinese Academy of Science and Technology, Pan Jianwei, and colleagues Zhang Qiang and Chen Tengyun, together with researchers from Tsinghua University, the Institute of Microsystems of the Chinese Academy of Sciences, and the Institute of Quantum Technology of Jinan, achieved the first international defense of more than 400 kilometers. The measurement device-independent quantum key distribution of hacker attacks greatly promotes the development of long-distance optical fiber quantum communication that combines security and practicality.

Zhang Yongde said that at present, quantum communication is mainly used in national secrecy departments, banks, securities systems, etc., and will be developed in combination with more fields in the future.

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