Here’s what you’ll learn when you read this story: For years, companies like Google and various Chinese research outfits have claimed to have achieved “quantum supremacy”—the ability of a quantum ...

Quantum computers hit a crucial milestone for error-free calculation The new record holder is a quantum computer called Jiuzhang 4.0 that makes calculations using particles of light, or photons.

Critics of quantum computers have argued that the supposed advantage these machines have over regular computers have often relied on tests involving pointless tasks. Now, the team at Google Quantum AI ...