A photo from open sources Physicists teleported quantum state a photon at a distance of 25 kilometers. Research results authors published in the journal Nature Photonics, and briefly with them available on AlphaGalileo website. In his experiment scientists carried two tangled photons at a distance of 25 kilometers on optical fiber. One of the particles (the second) turned out to be in the crystal. Next, physicists changed the quantum state of the first a photon, acting on it third. As a result, the state of the second particles (which was in the crystal) changed. Thus scientists observed the manifestation of quantum nonlocality: although photons were spaced 25 kilometers away, state change one of them affected the other. Researchers have improved their previous achievement a decade ago when at a distance six kilometers teleported state of the photon. Teleportation by fiber optic is more difficult than over the air. This is due to the interaction of photons with glass, during which they lose a significant portion of the initial information. In the course of work, scientists noted the high accuracy of their measurements. According to them, it can lead to progress in using entangled photons in quantum cryptography.
Teleportation
