Physicists have developed a new method for transferring large volumes of quantum data over long distances, which requires much less resources than before. The results of the research may lead to the development in the future of quantum networks, such as the global quantum Internet, transmits UNN with reference to Phys.. org.

Researcher Michael Zwerger and his colleagues from Innsbruck University (Austria) published an article on a new method of quantum coupling at great distances in the recent issue of Physical Review Letters.

"The greatest value of our work is that we provide an efficient and scalable scheme for quantum communication at large distances," M said.. Tsverger.

"We believe that this will be an important component of the future quantum Internet, in which large volumes of quantum data will be transmitted," he added..

The new method is based on the use of an alternative type of quantum repeater - a device that generates quantum entanglement at remote points in the quantum network to combat signal loss, to some extent, as the amplifier amplifies the signal in classical communication networks.

The biggest advantage of the new quantum repeater is that it allows you to significantly increase the transmission of quantum data over long distances, compared to how it was before. As a rule, as the transmission distance increases, more resources (qubits) are required at each relay station,.

Using a new quantum repeater, the amount of resources per transmitted qubit remains constant at each relay station; t. completely independent of distance. This allows you to transfer quantum data to arbitrarily long distances using relatively few resources. At the moment, the new method uses several hundred qubits at each relay station and can reach intercontinental distances.

"Just think about the Internet over the years, how the data transfer has sharply increased.

One can imagine a quantum Internet, where not classical data is transmitted, but quantum information. This is where our proposal becomes relevant, "- said M. Tsverger.

In the future, researchers plan to expand the use of new quantum repeaters to work with larger networks.

"We plan to use a similar idea for quantum networks with many users," added M. Tsverger.

Let's remind, the Chinese scientists for the first time teleported into orbit of the Earth.

Yulia Shramko Source: UNN.