In Austria have created a working prototype of a quantum router

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2017-11-23 20:00:05

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In Austria have created a working prototype of a quantum router

According to the editors of Science Alert, a group of experts from the University of Vienna were able to develop the first ever quantum router and even conducted the first tests of the new device. This is the first device that can not only make entangled photons, but also to convey them. In addition, the scheme used in the router, could be the basis for a quantum Internet.

As is known, the system of quantum communication work due to the properties of quantum entanglement that provides an incredible level of security of transmitted data. But at the moment the data can be transmitted only directly from one user to another. To redirect the flow of information over standard fiber optic networks is not possible, as they absorb light and thereby destroying the entanglement. However, a group of researchers under the leadership of Ralph Ridinger managed to create a device that helped to overcome these limitations.

The researchers used a frequency of 5.1 GHz, creating a 500 a silicon resonator, the vibration frequency which allows to preserve quantum information. All 500 of silicon resonators was tested for the presence of a suitable pair for him. Used was only 5 couples which was placed in the refrigerator, which is cooled resonators to absolute zero. They are then connected to each other by the optical cable length of 20 cm As reported by the author and head of development Mr. Ridinger

"Such nonrotary able to maintain the entangled state of the photons, in contrast to conventional communication networks. We do not see any restrictions preventing us to increase it from 20 centimeters to several kilometers and even more. The presented system massturbate on a larger number of devices and can be integrated in a real quantum network. The combination of our results with optical networks that can carry quantum information, can create the basis for future quantum Internet."

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