Scientists Pull a Doctor Who and Reverse Time With Quantum Computer

first_img Move over, TARDIS: Scientists just reported that they were able to turn back time by using a quantum computer.A team of scientists from the Moscow Institute of Physics and Technology, the U.S., and Switzerland, published their findings in Scientific Reports, and said they reversed time by a fraction of a second on an IBM quantum computer, New York Daily News reported. In the report, the scientists also determined the “probability that an electron in empty interstellar space will randomly travel back into its recent past,” Phys.org noted.Physicists reverse time using #quantum computer @phystech_en @SciReports https://t.co/ww85quz2b7— Phys.org (@physorg_com) March 13, 2019According to the report, finding the origin of the “arrow of time” is still a major scientific challenge. The scientists’ experiment challenged the second law of thermodynamics, which dictates the direction of events from the past to the future and involves the transition of energy within a system from usable to unusable, The Daily Mail reported.Most laws of physics do not make a distinction between the past and future, but the scientists claim that their experiment, which involved “reversing time,” showed that these laws can be violated. For their research, scientists were curious if individual particles could impulsively reverse themselves.To put this concept to the test, the scientists formulated two separate hypothesis: Time reversal would require supersystem manipulation to occur and “in most cases,” would not likely take place in nature. Second, if a supersystem were to “emerge for some specific situation,” a time reversal would need time that “exceeds the universal lifetime” to work.Stages of the quantum computer experiment. (Photo Credit: @tsarcyanide/Moscow Institute of Physics and Technology)The scientists tried to accomplish time reversal for a scattered electron with the help of an IBM quantum computer. For the experiment, the scientists used an “evolution program” that would impact “qubits,” also known as quantum bits. A quantum bit is the “fundamental unit of information in a quantum computer, capable of existing in two states, 0 and 1, at the same time or at a different time,” according to Dictionary.com.Here’s how it works: Following the launch of the evolution program, the particles would move into a changing pattern of zeros and ones. Following this scattering, a program would alter the computer’s state, enabling it to go backwards to its original state. Next, the evolution pattern would be kickstarted from the second state again and rewind the qubits to their original state and the past.According to the team, in 85 percent of cases, the two-qubit quantum computer returned back into its original state. When three qubits were involved in testing, more errors occurred, and resulted in an approximately 50 percent success rate. The scientists said the error rate is anticipated to drop as more devices are designed. With this experiment, time reversal can help make quantum computers more accurate in the future.More on Geek.com:Astronomers Discover 83 Supermassive Black Holes in the Early Universe Scientists ‘Wake Up’ Ancient Woolly Mammoth Cells in High-Tech ExperimentEvidence of Enormous, 2,600-Year-Old Solar Storm Found in Greenland Watch: Dolphin Leaps Feet Away From Unsuspecting SurferNASA Says 2 Asteroids Will Safely Fly By Earth This Weekend Stay on targetlast_img

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