We are getting closer to the technology used in the movie Star Trek, while a new test for teleportation is being carried out. Its efficiency was tested shortly after an experiment based on seven atoms, from the American University of Maryland and the Canadian Perimeter Institute for theoretical physics.
The authors of the study used laser pulses to manipulate and control the behaviour of seven atoms during teleportation. For example to verify in which order they arrive at the destination from where they started. The test was performed to understand the physics of black holes and to find out if and how future quantum computers can make mistakes or hide the information processed.
“The experiment tries to understand if information is lost or not, explains Augusto Smerzi, of the National Institute of Optics of the National Research Council (Cnr-Ino). “The study develops a new method based on quantum mechanics to understand if information that seems to be lost is actually hidden in the correlations between the particles and if they can be recovered […] It is as if we had a new deck of cards and we could to rearrange it after having reshuffled it, repeating the movements of the hands backwards”, clarifies the expert. The test can also help to understand what happens to the matter sucked by a black hole.
“Imagine a spaceship falling into a black hole. According to Hawking, the black hole evaporates and frees up radiation, which however has no memory of the initial spaceship. An aspect in conflict with quantum mechanics, according to which information can not be lost. The study can help us to understand what happens to the spaceship and if it is possible, in principle, to reconstruct it using the radiation emitted from the black hole.”
“This research” – he concluded – “is part of a ten-year European program, started a few months ago and financed with a billion euros, which aims to develop quantum technologies, for example for the computers of the future or for laser of new generation for the secure transmission of data, the latter project of which Italy, with Cnr-Ino, is the leader”.