A collaborative team from China and South Africa has developed a quantum microsatellite capable of long-distance communication and quantum key distribution. By transmitting images across 12,900 kilometers, they have set a record in quantum communications. Future plans include establishing a global network of microsatellites and optical ground stations, potentially revolutionizing communication technologies.
A collaborative effort between Chinese and South African researchers has led to significant advancements in quantum communications through the development of a quantum microsatellite. This small and lightweight device, alongside portable ground stations, was successfully tested for long-distance communication, achieving a record transmission over 12,900 kilometers (approximately 8,000 miles).
The team utilized a shared encryption key to transmit two distinct images: one depicting China’s Great Wall and the other of Stellenbosch University’s campus. Their paper states, “[We] report the development of a quantum microsatellite capable of performing space-to-ground quantum key distribution using portable ground stations.” This innovation lays the groundwork for future projects involving multiple microsatellites.
The researchers have plans to create an expansive network of optical ground stations, contributing to the vision of establishing a comprehensive quantum constellation. They anticipate that “a global-scale quantum network with revolutionary communication, computing and sensing capabilities is anticipated in the near future.”
The development of the quantum microsatellite represents a significant milestone in the field of quantum communications, enabling long-distance transmission and secure key distribution. With future plans to expand this technology into a larger network of satellites and ground stations, the project holds promise for groundbreaking advancements in global communication, computing, and sensing capabilities.
Original Source: www.scmp.com
