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

3 years ago 378
Technology 17 September 2021

By Matthew Sparkes

Fibre optic cables

A caller quantum web successful Hefei, China, runs connected fibre-optic cables

asharkyu/Shutterstock

A city-wide quantum communications web successful Hefei, China, that has been moving for astir 3 years is the largest objection to day of however a aboriginal quantum net mightiness work.

The network, created by Teng-Yun Chen astatine the University of Science and Technology of China (USTC) and his colleagues, uses commercialized fibre optics hardware to link 40 computers astatine authorities buildings, banks and universities that are clustered into 3 subnetworks, each separated by astir 15 kilometres.

In a accepted machine …

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