Scientists from China and Russia have joined forces to successfully test ultra-long-distance, "complete cycle" quantum encrypted communication between the two countries. This is the first time and is of far-reaching significance. It is reported that,This test was conducted on March 1, 2022, using the Zvenigorod ground station near Moscow, Russia, and the Nanshan ground station near Urumqi, Xinjiang, China, which are about 3,800 kilometers apart.
The test also relied on the world's first quantum satellite "Mozi" launched by China in 2016.
In the test, the scientists sent two images, both encrypted using quantum keys.
There are two keys, one is a quotation from the Chinese philosopher Mozi, and the other is an equation from the late Soviet physicist Lev Landau.
This test proved that it is "absolutely technically possible" to establish a quantum communication network between BRICS countries.
In fact,As early as 2020, the Russian quantum communication research team began to cooperate with the Chinese "Mozi" team.
In October 2023, the Russian Quantum Center, the Russian Quantum Space Technology Company, the Russian National University of Science and Technology and other units jointly released a paper, believing that the information transmission of quantum communication cannot be eavesdropped by hackers and can be almost absolutely safe.