07 January 2021
Chinese scientists have created the world's first integrated space-to-ground quantum network that can provide reliable, ultrasecure communication between more than 150 users over a total distance of 4,600 kilometers across the country, according to a study published in the journal Nature on 07 January.
In the integrated network, scientists from the USTC combined 700 ground-based optical fibers and two ground-to-satellite links to create a quantum communication network spanning over 4,600 km.
It represents a major step toward building a practical, large-scale quantum internet.
Link to the publication in Nature: "An integrated space-to-ground quantum communication network over 4,600 kilometres"