Images have been securely transmitted by satellite using Quantum Key Distribution (QKD) between ground stations in China and South Africa, a record-breaking distance of 12,900 kilometers (8,000 miles). More important than the distance is the drastic reduction in weight, and therefore ultimately of cost, in the transmission and reception technology.
First World-Spanning Ultra-Secure Quantum Satellite Link Joins South Africa And China comes via ChinaTechNews.com.