quantum communication

A quantum computer has been operated in space for the first time, according to a report by ScienceAlert. The milestone suggests quantum computing technology can function in the harsh conditions of orbit, opening the door to space-based quantum research and potentially quantum communication networks between satellites. Details about the hardware involved and the mission responsible have not yet been widely reported.

Researchers at Nanjing University report an advance in quantum key distribution, achieving boosted key rates for networks serving three users simultaneously. The work targets practical multi-user quantum communication, where distributing secure keys to several parties at once has so far limited performance. Higher key rates could make quantum-secured communication networks more viable for real-world deployment.