Physicists in Switzerland on Sunday reported that they were able to teleport the quantum state of the photon in the crystal, and in the process the information has been transferred from the light to the material record long - 25 miles - away.
This experiment was carried out using a fiber optic thread at the University of Geneva, improved in 2003 by the same team the previous record achieved in the quantum teleportation was performed 6 miles.
Test showed that "the quantum state of the photon can be stored transported to the crystal, although one does not interact directly with each other," - said the researchers report.
Quantum teleportation is based on the theory that describes the behavior of "Quantum entanglement connection supporting a pair of particles, which acquire the same characteristics at the same time, even from a distance.
This phenomenon is very interested in Cryptography, because the quantum state of the particle can be used to encode a much larger amount of information than the current computer binary code. In addition, the information stored in this way is not possible to retrieve illegally because any effects "associated" particle couples to disturb.
For this reason it is very important task is to find ways on how to preserve and process the light-encoded quantum information in real communication systems, destroying data.
While exploring the area, one of the two researchers quantum linked photons released 25 kilometers of fiber optic strand, and its "twin" was directed into the crystal, the photon retains information.
The third photon, like billiards, was sent to deal with the first photon in the light-and thus disrupted the linked pair. Later, the researchers measured the impact of the collision and found that the information carried by the third photon was not destroyed, and added a crystal, which was protected by a second photon associated information.
Although the practice is used quantum teleportation remains a distant goal, a new experiment represents important progress in this area, noted the researchers.
"Two elements of the quantum state of light - photons The two linked, like Siamese twins - a channel that enables a teleportation of light in the material," - told Felix Bussieres'as main article, published in the journal Nature Photonics, the author.
