A team from China and South Africa has tested a quantum microsatellite capable of transmitting encrypted images over a distance of 12,900 kilometers. Their success in quantum key distribution lays the groundwork for launching multiple microsatellites, aiming to develop a global quantum network for enhanced communication and sensing capabilities.
A collaborative effort between Chinese and South African researchers has resulted in significant advancements in quantum communication technologies. They utilized a compact microsatellite and mobile ground stations to successfully transmit data across a distance of approximately 12,900 kilometers (8,000 miles). This groundbreaking communication involved encryption through a shared key, allowing the transmission of two images: one depicting China’s Great Wall and the other of Stellenbosch campus.
The research team has reported, “[We] report the development of a quantum microsatellite capable of performing space-to-ground quantum key distribution using portable ground stations.” This achievement marks an important milestone towards the team’s vision of deploying multiple microsatellites, aimed at establishing a comprehensive network of optical ground stations.
The anticipated outcome of this initiative is a vast quantum network that is capable of enhancing global communication, computing, and sensing capabilities. The team expressed optimism regarding the realization of a practical quantum constellation, stating, “A global-scale quantum network with revolutionary communication, computing and sensing capabilities is anticipated in the near future.”
The advancements demonstrated by the Chinese-South African research team signify crucial steps towards the establishment of a global quantum communication network. By utilizing a quantum microsatellite for space-to-ground communication and envisioning multiple satellites, the potential benefits for global communication, computing, and sensing capabilities are substantial. This work solidifies a promising foundation for the future of quantum technologies on a global scale.
Original Source: www.scmp.com
