City-wide quantum data network in China is the largest ever built

Fibre optic cables

A brand new quantum community in Hefei, China, runs on fibre-optic cables


A city-wide quantum communications community in Hefei, China, that has been operating for nearly three years is the most important demonstration so far of how a future quantum web would possibly work.

The community, created by Teng-Yun Chen on the College of Science and Know-how of China (USTC) and his colleagues, makes use of business fibre optics {hardware} to attach 40 computer systems at authorities buildings, banks and universities which are clustered into three subnetworks, every separated by round 15 kilometres.

In a conventional laptop …

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