A joint effort by a Chinese-South African team resulted in the successful testing of a quantum microsatellite capable of space-to-ground quantum key distribution. They achieved a record communication distance of 12,900 km, transmitting images between the two nations. This development paves the way for a future global quantum network.
A collaborative team from China and South Africa has made significant advancements in quantum communication through the testing of a quantum microsatellite. This innovative project involved using a lightweight device and portable ground stations to set a record in long-distance communication. Demonstrating its functionality, the team successfully transmitted two images—one of China’s Great Wall and another of the Stellenbosch campus—across an impressive distance of 12,900 kilometers (8,000 miles) via the satellite.
In their published paper, the researchers articulated, “[We] report the development of a quantum microsatellite capable of performing space-to-ground quantum key distribution using portable ground stations.” They further emphasized that this achievement is a crucial building block for their ambitious plans, which involve launching multiple microsatellites and constructing an expansive network of optical ground stations.
The researchers project a future in which a global-scale quantum network will enable revolutionary advancements in communication, computing, and sensing capabilities. They claim, “A global-scale quantum network with revolutionary communication, computing and sensing capabilities is anticipated in the near future.” This initiative could potentially transform the future of secure communications on a global scale.
The collaboration between China and South Africa in developing a quantum microsatellite marks a significant milestone towards establishing a global quantum communication network. The successful transmission of images over a vast distance via this innovative technology lays the groundwork for future projects aimed at launching multiple microsatellites. The anticipated outcomes of this initiative could revolutionize communication, computing, and sensing capabilities across the globe.
Original Source: www.scmp.com
