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Scientists reverse time using a quantum computer

A team from the Moscow Institute of Physics and Technology used a quantum system program to reverse the state of a quantum computer a fraction of a second into the past.

RUSSIA (Next Media) – A team from the Moscow Institute of Physics and Technology used a quantum system program to reverse the state of a quantum computer a fraction of a second into the past.

They performed the experiments on two quantum bits, also known as qubits. Qubits are represented by a one, a zero or both at the same time.

During the first stage of the experiment, the two qubits were unaltered. Then, scientists used a computer program to alter the order of the previous stage, causing the qubits to become a random assortment of ones and zeros.

This process was followed by the time reversal stage during which the program reverses the chaotic effect on the qubits. Finally, the qubit reverts to the original state before it had been altered by the program. The program restored 85 percent of the cases where two qubits where involved.

The team was able to create a state that evolved against the second law of thermodynamics, which states that the state of entropy in the universe increases over time. Changes of a state in a closed system can remain static but cannot be reversed.

The paper was published in the journal Scientific Reports.


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