Scientists have found a way to verify the correct operation of quantum computers

Quantum computing is often described as the technology of the future, capable of solving tasks inaccessible to traditional computers. Scientists believe that as these machines develop, major breakthroughs are expected in areas such as physics, medical research, cryptography, and many others. This was reported on December 1 by Science Daily magazine.

"There are a number of problems that even the world's fastest supercomputer cannot solve, unless you are prepared to wait millions or even billions of years for an answer. Therefore, to test quantum computers, methods are needed to compare theory and result, rather than waiting for years for a supercomputer to perform the same task," said Alexander Dellios, lead author of the study and researcher at the Swinburne Center for Quantum Science and Theory of Technology.

The research team has developed new methods to confirm the accuracy of the results of a specific type of quantum device known as a Gaussian boson sampler (GBS). GBS machines use photons, elementary particles of light, to generate probabilistic calculations that would require thousands of years of work for even the fastest classical supercomputer.

To demonstrate their approach, the researchers applied it to the recent GBS experiment, which would take at least 9,000 years to reproduce using modern supercomputers. Their analysis showed that the resulting probability distribution did not match the expected one, and revealed additional noise in the experiment that had not been previously estimated.

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The results of this study may influence the development of large error-free quantum computers suitable for commercial use, to which Dellios hopes he will be able to contribute.

"The development of large—scale, error—free quantum computers is a daunting task, the solution of which will revolutionize areas such as drug development, artificial intelligence, cybersecurity, and will allow us to deepen our understanding of the physical universe," said Dellios.

An important part of the relevant task, the specialist called scalable methods for verifying the validation of quantum computers, which increase the understanding that errors affect these systems.

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Earlier, on October 8, Science Daily reported on the creation of the first working quantum lie detector, the Bell test, developed by physicist John Bell. It was clarified that the device shows whether the quantum computer uses the real effects corresponding to it or imitates them.

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