Teleportation is already a confirmed reality, at least on a quantum scale . Two independent scientific teams, from China and Canada, have managed to make remote transfers of quantum information encoded in light particles through several kilometers of fiber optic networks. The quantum internet is making its way as the communication network of the future.
Researchers have shown that quantum teleportation is technologically possible, by transferring quantum information encoded in light particles along several kilometers of fiber optics in two different cities : Hefei in China and Calgary in Canada.
This technology could greatly improve the security and speed of Internet connections , according to the scientists involved in both projects.
But how is it possible to send information over long distances using quantum teleportation?
Certainly this extreme is complicated, because for considerable distances, it is necessary to use independent light sources , which currently represents a technological challenge, since the light beam from one source has to remain indistinguishable from the light beam from the other. source after traveling several kilometers of fiber.
How to overcome this obstacle? The two groups of researchers independently developed a series of feedback and synchronization mechanisms . The China-based team used light at the telecommunications wavelength (as used in today’s telecommunications networks) in order to minimize the rate at which the signal light fades through the fiber. . The Canadian team used photons at a telecommunication wavelength and also at a length of 795 nanometers (nm), which made the quantum teleportation experiment faster than the one used in the Chinese city of Hefei (17 photons per minute). ), but with reduced fidelity.
The study has been published in the journal Nature Photonics.
