World's first quantum microsatellite demonstrates real-time, secure quantum key distribution to multiple compact, mobile ground stations
https://phys.org/news/2025-03-world-quantum-microsatellite-communication-multiple.html
"decoy-state QKD light sources for quantum state preparation, real-time key distillation, encrypted communication based on laser communication, high-precision tracking based on satellite attitude control to maintain stable optical links... compact optical ground stations reduces weight 2 orders magnitude to <100 kg... transmitted approximately 250 million quantum photons/ second, up to 1 Mbits secure keys for each satellite pass... between Beijing and Stellenbosch, 12,900 km apart... quantum communication/ internet"
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