Experiments on Google's 67-qubit Sycamore processor showed operations entering a new "weak noise phase" in which calculations were complex enough to outperform supercomputers, based on benchmark testing.

Researchers at Google claimed that they have found conditions under which quantum computers can beat their classical counterparts.

Quantum machines have a noise threshold past which classical machines cannot best them, researchers have learnt.

A team of engineers, physicists and quantum specialists at Google Research has found that reducing noise to a certain level allows the company's sycamore quantum chip to beat classical computers running random circuit sampling (RCS).