Scientists in Germany have achieved a record-scale quantum communication network using existing infrastructure, marking a significant advancement in ultra-secure connections for quantum computers. Researchers at Toshiba Europe successfully transmitted quantum signals over a 254-kilometre fibre-optic network between Frankfurt and Kehl, overcoming previous limitations of shorter distances. This breakthrough is seen as a crucial step towards building a large-scale quantum internet, with implications for secure data transmission and advanced computational applications. Teljes cikk (Euronews.com)