Scientists managed to reverse arrow of time in a breakthrough study using quantum computers. How close are we to actual time travel?
Time travel is something most people dream about. So far, we have only seen it happen in movies or TV shows or read about it in books. According to the laws of physics, time is linear and cannot be reversed. Time is not in our hands and there is nothing we can to do control it. However, a recent discovery made by scientists almost completely contradicts the laws of physics. Scientists used a quantum computer and managed to reverse time. Who said, time travels only in one direction, right? The quantum computer has been described as a semi-time machine and has defied the second law of thermodynamics, which is the arrow of time. The breakthrough study by the scientists has shown that we might only be a few steps away from discovering the secret behind time travel. With the help of the quantum computer, researchers were able to unscramble a set of electrons which was akin to pool balls on a table going back into a starting triangle-formation.
In other words, all those people who witnessed the reversal of the electrons were simply witnessing time going backward. As reported by the Express, Lead researcher Dr. Gordey Lesovik, who heads the Laboratory of the Physics of Quantum Information at the Moscow Institute of Physics & Technology (MIPT), said, "We have artificially created a state that evolves in a direction opposite to that of the thermodynamic arrow of time.” The so-called time machines made up of electron qubits. Qubits are units of information which are described by a 'one', a 'zero', or a mixed 'superposition' of both states.
Researchers from Russia and Switzerland, with help from a quantum computer, say they've been able to reverse time. https://t.co/URMIIxe5Px— CTV Vancouver (@CTVVancouver) March 13, 2019
In an interview with the Newsweek, Dr. Lesovik said, “Doing this magic with the developed state of ink we will see that after the same time (time needed for the dissolving of ink in the water) the ink will again combine back into the original drop." He further added, “This is exactly what we did in our work where the drop of ink is state of three qubits, and the water is a Hilbert state of the quantum computer." The study was carried out by scientists at the Moscow Institute of Physics and Technology with assistance provided by colleagues from the US and Switzerland.
https://t.co/gMrkPegQ7u— Natalie (@Natalie42x) March 14, 2019
This is HUGE not because of the "time reversal" but because of the practical application of their algorithm to reduce noise in quantum computers, which couldlead to quantum supremacy
Lead author Gordey Lesovik said, "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." The qubits were apparently set at level zero. From this, it was seen to lose its order and become more complex - "changing to a pattern of zeros and ones". During the experiment, the scientists managed to send these qubits back in time - from complex to simple.
The researchers managed to reverse time using a specially developed programme that allowed the quantum computer to go from a state of chaos to complete order once again. In other words, back from complex to simple. The study published in the journal Scientific Reports mentions that the programme was made successful in a two-qubit quantum computer around 85 percent of the time. However, when the third qubit was introduced, the success rate fell to 50 percent and a lot more errors were seen.
"Physicists reverse time". A tad exaggerated headline. Quantum computers aren't exactly closed systems, so the reversal doesn't really violate physics. Still a very interesting result.#science #timetravelhttps://t.co/baAZnoR1uh— Osama Tahir (@otahir92) March 14, 2019
According to scientists, such quantum computers that can reverse time on a large scale will not be developed anytime soon. They also suggest that time reversal in nature is very complex. "Such an unfortunate growth of the complexity explains why do we not observe such time-reversed objects in the Nature,” said Lebedev, another scientist working on the study. “The probability of a spontaneous appearance of a time-reversed object (particle of a system of particles) is negligible.”
As reported by ABC News, Dr. Karl Kruszelnicki mentioned that there were two types of time travel - travel into the future and travel into the past. According to him, we travel into the future all the time, at the rate of one second per second. As Einstein's theories have suggested, high speed and high gravity can help slow this flow of time down. So what about traveling back into the past? Or travel into the future? With the new quantum computers, we are a step closer to traveling back in time. However, there are no reports or studies that suggest we can travel into the future.
There have been multiple instances where people have claimed to have caught time travelers on camera. Some people have even claimed to have traveled time. In 2015, there was a man who claimed to be from the year 2030. The news regarding this time traveler, commonly known as Noah, was released by Apex.Tv. The man carried pieces of paper, what he said were newspaper cuttings he found in a library. The news was fro the years 2019 onwards. He predicted that a major snowstorm would hit the midwest in the start of 2019, followed by which there will be several UFO sightings this year. Well, the first prediction did come true. As for the second one, a UFO was recently sighted in Australia. So was he right? Are all his future predictions going to come true? Is time travel actually possible?