The channel of quantum data transfer between two cities was tested in China

Quantum networks are based on a physical phenomenon called quantum entanglement. Within the framework already

experiments carried out by Chinese scientistscreated pairs of entangled photons and then fed one of them into a receiver, creating an encrypted line with a stable quantum key. Until now, the length of such lines was limited, but Qiang Zhang from the University of Science and Technology of China and his colleagues figured out how to get around the limitation using a repeater.

The basis of quantum networks is the following:physical phenomenon like quantum entanglement. In their experiments, Chinese scientists created pairs of entangled photons and then fed one of them into a receiver. Thus, they created an encrypted line with a stable quantum key.

It is worth noting that recentlythe length of such lines was severely limited in length. Scientists from the University of Science and Technology of China have come up with a way to get around the limitation using a repeater.

Lasers from different sides of the fiber generatephotons that rush towards each other and meet in the middle concentrator. The system registers this and alerts the sender and receiver of the data.

research text

Thanks to the repeater, the line allowsexchange quantum keys for secure data transfer. The authors of the work are confident that their experimental quantum data transmission line with a repeater will help in the creation of new safe and effective communications. In addition, they note that their work will not “go to the table”, but will become commercially successful.

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