Chinese scientists have achieved the quantum entanglement of cold atoms across a record-breaking 420km (260 miles), a breakthrough they say lays the groundwork for intercity quantum networks. According to a paper published by the peer-reviewed journal Physical Review Letters on August 11, the di...
Source: [SCMP](https://www.scmp.com/news/china/science/article/3364045/miles-ahead-china-team-boosts-atom-entanglement-distance-record-fourfold?utm_source=rss_feed)