An international research team led by Chinese scientists has achieved a groundbreaking milestone in quantum communication, enabling ultra-secure data transmission over 12,900 kilometers between the Chinese mainland and South Africa. The experiment marks the first successful real-time quantum key distribution (QKD) between a satellite and compact ground stations across hemispheres.
Using the Jinan-1 micro-nano satellite and innovative miniaturized receiving stations, the collaboration between the University of Science and Technology of China and Stellenbosch University demonstrated hacker-proof communication technology with potential applications in banking, defense, and global data networks. The system’s successful operation through atmospheric turbulence was described in Wednesday’s Nature publication as "a technically impressive achievement" by peer reviewers.
"This proves the maturity of satellite QKD technology for global implementation," said the review, highlighting progress toward constellations of trusted quantum nodes. The project’s compact ground stations – including a key installation in South Africa’s Western Cape – significantly reduce infrastructure costs compared to earlier quantum experiments.
While quantum technology promises unhackable communications critical for financial transactions and sensitive government data, this breakthrough demonstrates China’s growing role in advancing practical applications of next-gen security solutions. Analysts suggest the achievement could accelerate international partnerships in space-based quantum infrastructure.
