Photo taken on Nov 28, 2016 shows a quantum communication ground station in Xinglong, North China's Hebei province. [Photo/Xinhua]

Quantum entanglement is a phenomenon in which two or more entangled particles can affect each other simultaneously regardless of the distance between them. Albert Einstein called this interaction "spooky", but scientists are trying to use it to encrypt and send messages.

"This is the most secured method of communication because any eavesdropper will disrupt the entanglement and be detected," said Wang Jianyu, a CAS researcher and the system commander of Micius.