Researchers from the Moscow Institute of Physics and Technology teamed up with colleagues from the U.S. and Switzerland and returned the state of a quantum computer a fraction of a second into the past. They also calculated the probability that an electron in empty interstellar space will spontaneously travel back into its recent past. The study is published in Scientific Reports.
"This is one in a series of papers on the possibility of violating the second law of thermodynamics. That law is closely related to the notion of the arrow of time that posits the one-way direction of time from the past to the future," said the study's lead author Gordey Lesovik, who heads the Laboratory of the Physics of Quantum Information Technology at MIPT.
They should publish theonion.com so nobody, good d forbids, takes this seriously. Especially kids
The reversion of thermodynamic time arrow is subject of live research by mainstream science (1, 2, 3, 4, 5, 6, 7, 8, 9, 10). But there is the catch: only the research, which enforces another hypes (like the quantum computers - 1, 2, 3, 4) gets promoted - not the research of devices of practically significant usage, like the overunity (1, 2, 3, 4, 5, 6, ...) and antigravity (1, 2, 3) devices. Because scientists - you know - are supposed to help the people, I mean their people.
The four stages of the actual experiment on a quantum computer mirror the stages of the thought experiment involving an electron in space and the imaginary analogy with billiard balls. Each of the three systems initially evolves from order toward chaos, but then a perfectly timed external disturbance reverses this process
Similar processes routinely happen in the nature at many scales, they're just ignored or not labeled/recognized so. Galaxies and stars condense and after then evaporate, living organism grow and decay, quantum particles (like the neutrinos) oscillate, elastic balls are jumping and so on. The contemporary science has notion of entropy confused: all phenomena which are followed by condensation and/or collapse are actually negentropic ones. Whereas black holes are considered as an objects of highest possible entropy: the entropic paradox ensues...
At the quantum scale the objects undergo so-called quantum zitterbewegung, when they spontaneously expand and collapse in similar way, like the electron in the above study. Which is actually quite uncontroversial, because this state is typical for Dirac/Majorana/Weyl fermions in condensed phase physics, namely superconductors, graphene and topological insulators. The particles within these materials have motion in spatial dimensions constrained, so that they're moving across temporal dimension:
This effect is not limited to quantum mechanical systems though: the mutually entangled systems of many particles (like magnetic domains within ferromagnetics) are moving in unison, which opens opportunity for exploiting the reversal of time arrow in practical macroscopical systems even at room temperature. But I'm pretty sure, just this application will be considered at the very end.