A Chinese-South African research team has developed a quantum microsatellite capable of space-to-ground quantum key distribution, achieving a record transmission of images over 12,900 kilometers. This initiative serves as a foundation for advancing towards a global quantum communication network, enhancing future capabilities in communication, computing, and sensing.
A collaborative initiative between Chinese and South African researchers has initiated testing for a quantum microsatellite with the potential to establish a global communications network. By utilizing a compact, lightweight device alongside portable ground stations, the team has achieved a significant milestone in quantum communications.
In a demonstration, the researchers transmitted images over a distance of 12,900 kilometers (8,000 miles) using a shared encryption key. The two images included one of China’s Great Wall and another of Stellenbosch campus, showcasing the practical capability of this innovative technology.
The researchers stated, “[We] report the development of a quantum microsatellite capable of performing space-to-ground quantum key distribution using portable ground stations.” This achievement lays a robust groundwork for their future ambitions, which include launching multiple microsatellites and creating an extensive network of optical ground stations.
The team anticipates that this effort will lead to the successful realization of a practical quantum constellation. They expect that a global-scale quantum network will emerge, boasting revolutionary advancements in communication, computing, and sensing technologies in the near future.
The successful testing of the quantum microsatellite by Chinese and South African researchers marks a pivotal progression towards a potential global quantum communication network. By transmitting images over a significant distance, they demonstrated the feasibility of quantum key distribution using this new technology. Moving forward, the establishment of multiple microsatellites and ground stations could redefine communication and computing capabilities across the globe.
Original Source: www.scmp.com
