[Chinese scientists achieve 1000 km non-relay optical fiber quantum key distribution] Science and Technology Innovation Board Daily on the 26th, Pan Jianwei and Zhang Qiang of University of Science and Technology of China worked with Wang Xiangbin of Tsinghua University, Liu Yang of Jinan Quantum Technology Research Institute, you Lixing and Zhang Weijun of Shanghai Institute of Microsystems and Information Technology of Chinese Academy of Sciences, by developing low crosstalk phase reference signal control, very low noise single photon detector and so on. It realizes 1002 km point-to-point long-distance quantum key distribution in optical fiber, which not only sets a world record for non-relay quantum key distribution distance in optical fiber, but also provides a scheme for high-speed backbone link of intercity quantum communication. The relevant research results are published in the physical Review KuaiBao.