俄罗斯科学家用量子计算机将时间倒流

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概要:导读:时间逆转已经被科学家们在量子物理学领域实现了。虽然目前与人无关,但不得不让人想到未来是否会出现时光穿梭机。   Russian Scientists Used a Quantum Computer to Turn Back Tim...

导读:时间逆转已经被科学家们在量子物理学领域实现了。虽然目前与人无关,但不得不让人想到未来是否会出现时光穿梭机。

 

Russian Scientists Used a Quantum Computer to Turn Back Time

俄罗斯科学家用量子计算机将时间倒流

Dan Robitzski March 13th 2019

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Russian scientists have apparently reversed the flow of time in an experiment they conducted on a quantum computer.

在一次量子计算机实验中,俄罗斯科学家显然已经可以逆转时间的流向。

The finding is unlikely to lead to a time machine that would work on people. But the team of physicists managed to restore IBM’s public quantum computer to the state it had been in just a moment earlier, according to research published Wednesday in the journal Nature Scientific Reports — a nuanced result, but one that could have striking implications for the future of computing, quantum physics, and our understanding of time itself.

据自然科学报道杂志周三刊登的研究,这项发现不可能导致产生一台可以作用在人身上的时光机器。但是物理学家团队们想办法通过重建了IBM的公共量子计算机,让它回溯到刚刚过去的状态——虽然是一个细微的研究结果,但是却对未来的计算机、量子物理学和我们对时间的理解,意义非凡。

“We have artificially created a state that evolves in a direction opposite to that of the thermodynamic arrow of time,” Gordey Lesovik, a quantum physicist from the Moscow Institute of Physics and Technology who led the research project, said in a university-published press release.

我们已经人为得创造出了一种状态,在这种状态里,热力学意义上的时间可以反向演进。Gordey Lesovik,该项目的负责人,一位来自莫斯科物理和技术研究院的量子物理学家在该大学的校刊中说。

 Great Scott

伟大的斯科特

Lesovik’s team worked with scientists at the Argonne National Laboratory in Illinois to run thousands of experiments on a quantum system programmed to reverse time’s arrow on a single electron.

Lesovik的团队和来自美国南伊利诺伊大学阿贡国家实验室的科学家们一起,在一个量子系统程序中进行了几千次试验来改变单一电子的时间走向。

After thousands of trials, the physicists managed to restore the quantum computer’s earlier state about 85 percent of the time, but only if they were working with a simplified, two-qubit system. A more complex quantum computer with three qubits was too chaotic, and the time reversal experiment only worked 49 percent of the time.

经过几千次试验,物理学家们做到了能够重建量子计算机所处的先前状态时间的85%,但他们只是在一个简化的,2量子比特系统上工作。更复杂的三量子比特的量子计算机干扰太多,时间只实现了49%的逆转。

Just like research into quantum teleportation has nothing to do with transporting people, there’s no reason to link this study to the notion of a machine that could travel through time. Rather, the scientists hope that their work can help quantum computer scientists make sure their software is actually doing what it’s supposed to by kicking it back through time and double checking its work.

跟量子传送的研究与对人的传输毫无关系一样,没有理由去把该项研究成功同时间穿梭机联系起来。科学家们只是希望他们的工作,可以帮助量子计算机科学家确保他们的软件可以像他们期望的那样运行,通过点击回溯到先前的时间状态,再次检验他们的工作。

via:https://futurism.com/russia-blocked-access-protonmail-servers 


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