NASA space agency specialists have made significant progress in the development of the quantum Internet, – according to a new article published in the journal Nature Photonics. They managed to use the so-called 'dark' cable laid under the Canadian city of Calgary, as a result of which the scientists sent a photon over the city network at a distance of 6 kilometers.
It should be noted that earlier it was noted that overcoming longer periods was also noted, but this was achieved exclusively in laboratory conditions.
Now the specialists are planning to send messages containing 'incorporeal' information to the desired addressee by means of quantum teleportation. It will be impossible to intercept such messages.
The study involved engineers from NASA's Jet Propulsion Laboratory, the University of Calgary, and the National Institute of Standards and Technology in Boulder, Colorado. The main innovation of the experiment with quantum teleportation in the urban cable network was the use of dark cables and photon sensors, developed by specialists from the Jet Propulsion Laboratory.
Quantum teleportation is made possible by the concept of 'entanglement', which explains why, despite the distance, particles can be linked together. Experts believe that quantum cryptography will soon offer users secure communications based on the exploitation of urban quantum networks.
Sources: Nature Photonics
