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Monday, September 20, 2021

City Wide Quantum Data Network

 China and Quantum Data Networks

City-Wide Quantum Data Network in China Is Largest Ever Built  By New Scientist, September 20, 2021

China has been running a city-wide quantum communications network in Hefei, the largest quantum network demonstration built to date, for almost three years.

Designed by scientists at the University of Science and Technology of China, the network's commercial fiber-optic hardware connects 40 computers at government buildings, banks, and universities clustered into three subnetworks, each separated by about 15 kilometers (9 miles). Smaller subnetworks and switches support routes between different users as needed, while three trusted relays streamline the architecture.

The researchers claim the network can be linked to other similar frameworks through long-distance quantum connections and satellite relays, clearing a path toward a global quantum network.

In New Scientist

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