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Physicists achieved record precision in all key operations of a quantum processor simultaneously.
A quantum processor is like an orchestra, where qubit musicians can play two notes at once. The dream of such machines was laid by Richard Feynman and David Deutsch. For the orchestra to sound harmonious, 'gates' are needed — commands that change notes. But previously, tuning one group of musicians drowned out others: improving the accuracy of single qubits spoiled pair interactions and the recording of the final melody.
Scientists found a way to conduct so that all instruments played clearly. By adjusting the coupling strength between qubits, they applied a protocol that eliminates rare false notes — states that go beyond the desired level. As a result, the 'orchestra' achieved accuracy comparable to one mistake per ten thousand notes.
Errors in quantum computing increase entropy (a measure of disorder). If left uncorrected, useful information literally dissolves into noise, as if into a black hole.
This success is not a breakthrough into the mysteries of the Standard Model of particle physics, but a triumph of engineering, where tuning frequencies resembles spectroscopy — the method of determining the composition of stars by light. Such precision opens the way to computers capable of correcting their own errors.
