Chinese scientists have developed a compact quantum communications satellite system weighing only 60 kilograms and have successfully tested its operation aboard the Tiangong-2 orbital station. This device will accelerate the creation of a ground-space “quantum Internet”, scientists write in an article published in the journal Optica. “The results of our experiments suggest that we can create a ground-space quantum network, the operation of which will be built on the basis of compact quantum communication systems built into microsatellites or fleets of satellites. In the near future, they will be used to protect interstate, diplomatic and financial correspondence.”, – said Professor...