Time moves backwards on quantum computer

A model of the'Doctor Who TARDIS in London

Uncovering the origin of the arrow of time remains a fundamental scientific challenge. This entropy is said to move in only one direction, i.e.it will keep on increasing with the passage of time. This runs contrary to the second law.

"We began by describing a so-called local perpetual motion machine of the second kind".

"Then, in December, we published a paper that discusses the violation of the second law via a device called a Maxwell's demon".

Simulated, of course, is the key word: lead author of the study Gordey Lesovik of MIPT told CNN that we're "not really" approaching the ability to actually reverse time.

Scientists have found a way to reverse the direction of time with the help of a quantum computer, according to a breakthrough study. Thus, they chose to check and examine a solitary electron in empty interstellar space.

"Suppose the electron is localized at the time we started its observation". There is no distinction between the future and the past but the region of space containing the electron will spread out very quickly. The vulnerability of the electron's position is growing. This is where the second law of thermodynamics comes into play.

"However, Schrödinger's equation is reversible", noted Valerii Vinokur, a co-author of the paper, from the Argonne National Laboratory, U.S. It would only look that the balls defy the sense of time. This explains why we do not observe old people growing younger or an ink blot separating from the paper.

Head over to the official website to find out more and also to learn how the researchers have attempted to reverse time in a four-stage experiment.

The study obviously contradicts the basic law of physics while it also shows an advancement in the understanding of the quantum computer. This highly ordered configuration corresponds to an electron localized in a small region, or a rack of billiard balls before the break.

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Here's how it works: Following the launch of the evolution program, the particles would move into a changing pattern of zeros and ones.

The breakthrough could have important applications for the development of quantum computers. Actually, a similar degradation would occur by itself due to interactions with the environment.

But then another program modified the state of the quantum computer in such a way that it evolved "backwards", from chaos to order.

Qubits behave in a highly and increasingly random state, similar to the electrons inside an atom.

An analogy would be giving the pool table such a perfectly calculated kick that the balls roll back into an orderly pyramid. It meant the state of the qubits was rewound back to its original starting point.

The time reversal achieved a success rate of 85 percent when two qubits were involved, according to the research. As per the scientists, these errors are because of flaws in the actual quantum computer. However, the researchers believe this error rate isn't insurmountable, they just need more sophisticated hardware.

In a development that also represents a major advance in our understanding of quantum computers, by using electrons and the unusual world of quantum mechanics, researchers were able to turn back time in an experiment that is the equivalent of causing a broken rack of pool balls to go back into place.

For their experiment, the scientists used IBM's simple public quantum computer program, which uses two qubits - two units that, like a regular computer bit, can be a one or a zero.



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