The achievement based on experiments conducted with the world' s first quantum satellite, Quantum Experiments at Space Scale (QUESS), was published in the authoritative academic journal Nature on Thursday.
The Nature reviewers commented that the experiment was an impressive achievement, and constituted a milestone in the field.
Nicknamed "Micius," after a 5th Century B.C. Chinese philosopher and scientist who has been credited as the first person ever to conduct optical experiments, the 600-kilogram-plus satellite was sent into a sun-synchronous orbit at an altitude of 500 kilometers on Aug. 16, 2016.
Pan Jianwei, lead scientist of QUESS and an academician of the Chinese Academy of Sciences (CAS), said the satellite sent quantum keys to ground stations in Xinglong, in north China's Hebei Province, and Nanshan, near Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region.