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[Nature]Quantum communications leap out of the lab

Date: 2014-04-23

China begins work on super-secure network as ‘real-world’ trial successfully sends quantum keys and data.

   Cybersecurity is a step closer to the dream of sending data securely over long distances using quantum physics — spurred by two developments.

   This week, China will start installing the world’s longest quantum-communications network, which includes a 2,000-kilometre link between Beijing and Shanghai. And a study jointly announced this week by the companies Toshiba, BT and ADVA, with the UK National Physical Laboratory in Teddington, reports “encouraging” results from a network field trial, suggesting that quantum communications could be feasible on existing fibre-optic infrastructure.