Scientists claim to have 'reversed time' with quantum computer

Rodiano Bonacci
Marzo 14, 2019

Scientists have found a way to reverse the direction of time with the help of a quantum computer, according to a breakthrough study.

The revelation completely contradicts the laws of physics, which suggests that time is linear and can only travel in one direction.

In a development that also represents a major advance in our understanding of quantum computers, by using electrons and the odd 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.

The research includes Lead researcher Dr Gordey Lesovik, head of the Laboratory of the Physics of Quantum Information at the Moscow Institute of Physics & Technology (MIPT) who was helped by colleagues in Switzerland and the US.

The researchers - from the Moscow Institute of Physics and Technology and helped by colleagues in Switzerland and the U.S. - expect the technique to improve in time, becoming more reliable and precise with time. 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.

If you were to see a video of someone breaking an arranged triangle of pool balls into a mess, then watching that backwards would obviously look absurd.

During this process, order was lost - just as it is when the pool balls are struck and scattered with a cue.

The "time machine" described in the journal Scientific Reports consists of a rudimentary quantum computer made up of electron "qubits". A qubit is a unit of information described by a zero, one or can be a mix of both the states in which case it becomes a superposition.

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.

The scientists have found that working with only two qubits makes time reversal more achievable with a success rate of 85 per cent but when more than two qubits are involved, the chances of it forming a time reversal modified pattern lessens to 50 per cent. The scientists said the error rate is anticipated to drop as more devices are designed.

This story originally appeared on The Independent.

Stages of the quantum computer experiment.

"Our algorithm could be updated and used to test programs written for quantum computers and eliminate noise and errors", said Dr Lesovik.

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