Quantum computing has long lived in the realm of lab demos and bold PowerPoint slides, but two of the industry’s biggest players now say the first truly useful machines are less than five years away.

Amid some scepticism, many say the machines can now achieve results beyond the capability of traditional computers ...

The decades-long quest to create a practical quantum computer is accelerating as major tech companies say they are closing in on designs that could scale from small lab experiments to full working ...

The company’s surface code technique allows its quantum bits to faithfully store and manipulate data for longer, which could pave the way for useful quantum ...

Google has reportedly developed a quantum computer that can instantly make calculations that would take the world's most advanced supercomputers 47 years or nearly half a century to process. The ...