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https://www.cnn.com/2019/03/14/world/russia-scientists-reverse-time-scli-scn-intl/index.html
Watching "How The Universe Works" last night it had a piece on Russia's work on I guess time travel. Two things I learned:1.) If we could travel back it would have to be one subatomic particle at a time. 2.) This is a mind blower-We would not travel back to our universe but to another universe! This discussion falls in to the science of quantum mechanics, quantum physics and something called "The Quantum Realm" which as I try to understand deals strictly with subatomic particles. Anyway it is exciting to know that scientists all over the world are tying relentlessly to figure out the universe. In plain English, the Russians sent back one part of a particle to a fraction of time in the past. It's a start!! Below is the article.
(CNN) For most of us, the closest we'll get to time travel is watching an episode of "Doctor Who." A team of physicists from the Moscow Institute of Physics and Technology (MIPT), however, have come closer than most: using a quantum computer, they successfully simulated the reversal of time.
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. But it still could have important practical and theoretical ramifications.
A team of physicists from MIPT, which also included scientists from Switzerland and the US, looked into "the possibility of violating the second law of thermodynamics," Lesovik said in a press release.
The Moscow researchers began with a quantum computer comprising two qubits, the basic element of quantum information. They observed the computer through four stages: order -- the starting point -- degradation, time reversal and chaos.
During the degradation phase, the researchers explained in a press release, they launched an "evolution program" that resulted in the qubits morphing into "an ever more complex changing pattern of zeros and ones."
In the time reversal phase, they ran a program that modified the quantum computer to "evolve backwards," moving "from chaos to order."
In the final phase, the scientists relaunched the evolution program. Instead of degenerating into further chaos, the qubits were restored to their original state -- returning, in effect, to the past.
With two qubits, the quantum computer reverted to its original state 85% of the time; when a third qubit was added, the success rate dropped to 50%.
Watching "How The Universe Works" last night it had a piece on Russia's work on I guess time travel. Two things I learned:1.) If we could travel back it would have to be one subatomic particle at a time. 2.) This is a mind blower-We would not travel back to our universe but to another universe! This discussion falls in to the science of quantum mechanics, quantum physics and something called "The Quantum Realm" which as I try to understand deals strictly with subatomic particles. Anyway it is exciting to know that scientists all over the world are tying relentlessly to figure out the universe. In plain English, the Russians sent back one part of a particle to a fraction of time in the past. It's a start!! Below is the article.
(CNN) For most of us, the closest we'll get to time travel is watching an episode of "Doctor Who." A team of physicists from the Moscow Institute of Physics and Technology (MIPT), however, have come closer than most: using a quantum computer, they successfully simulated the reversal of time.
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. But it still could have important practical and theoretical ramifications.
A team of physicists from MIPT, which also included scientists from Switzerland and the US, looked into "the possibility of violating the second law of thermodynamics," Lesovik said in a press release.
The Moscow researchers began with a quantum computer comprising two qubits, the basic element of quantum information. They observed the computer through four stages: order -- the starting point -- degradation, time reversal and chaos.
During the degradation phase, the researchers explained in a press release, they launched an "evolution program" that resulted in the qubits morphing into "an ever more complex changing pattern of zeros and ones."
In the time reversal phase, they ran a program that modified the quantum computer to "evolve backwards," moving "from chaos to order."
In the final phase, the scientists relaunched the evolution program. Instead of degenerating into further chaos, the qubits were restored to their original state -- returning, in effect, to the past.
With two qubits, the quantum computer reverted to its original state 85% of the time; when a third qubit was added, the success rate dropped to 50%.
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