Teleportation is closer: the successful experiment with electrons

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In the quantum world, teleportation could be feasible, even if in a different way from what is seen in science fiction television series. According to a study by experts from the University of Rochester and Purdue University, published in the journal Nature Communications, in the subatomic world of quantum mechanics one could think differently of quantum computing, in order to make the teleportation of quantum states possible.”Previous studies have shown that information transmissions (not of living matter, as in Star Trek) can occur between photons on chips even if they are not physically connected. Our work explores new ways to create interactions between distant electrons,” he says John Nichol of the University of Rochester, specifying that a methodology based on this new knowledge could revolutionize technology, medicine and science by providing faster and more efficient processors and sensors.
“According to the concept of entanglement, or spectral action at a distance, as defined by Einstein, the properties of each particle influence and depend on the properties of other particles, even if the interactions occur at great distances. Quantum teleportation involves two distant particles intertwined, where the state of a third particle instantly teleports its state to the two intertwined particles, “he explains Andrew Jordan, Professor of Physics at the University of Rochester, adding that the process takes advantage of the properties of the qubits.”Normal computers rely on bits, which take binary values ​​of 0 or 1, while quantum computers encode information in quantum bits, or qubits, which can simultaneously take on the two values. Our study demonstrates quantum teleportation using electromagnetic photons to create remote intertwined pairs of qubits, “the researchers continue. The team used a newly developed technique based on the Heisenberg exchange mating principles. “Electrons can be compared to magnets with a pole that can point up or down, depending on the electron’s magnetic moment, or spin. Two particles with the same magnetic moment cannot be in the same place at the same instant, or their quantum states would replace each other back and forth in time “, continues Nichol, claiming to have managed to create the entanglement between two electrons despite the lack of interaction between the particles.

“Our results pave the way for future research on quantum teleportation involving spin states of all matter, not just photons, and provide further evidence of the surprisingly useful capacities of individual electrons in qubits,” the scientists conclude.



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https://www.repubblica.it/scienze/2020/06/22/news/teletrasporto_quantico_piu_vicino_l_esperimento_riuscito_con_gli_elettroni-259894905/

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