Chinese scientists find path for long-distance quantum communications network

Chinese researchers say they have found a viable pathway to building long-distance quantum communication networks. In a study published this week in Nature, a team from Peking University said it had developed a prototype networking capacity that could communicate over distances of more than 3,700km (2,300 miles). Quantum key distribution (QKD) is regarded as the gold standard for secure communication – any attempt at eavesdropping inevitably leaves detectable traces, regardless of distance or...