A new federal initiative to build a quantum supercomputer could transform everything from encryption to drug discovery, creating the next wave of winners and losers.

The city is betting on a promising—but commercially unproven—technology.

The point at which quantum computers outperform classical ones will arrive. The question is who controls the infrastructure when it does.

It’s hard to know what to make of quantum computers. On the one hand, it may very well be like where AI was five or seven years ago. And, if that’s the case, perhaps the quantum plays, many of which have fallen out of favor in recent quarters,

Researchers from the University of Sydney, working with IBM, have identified and quantified important factors limiting the performance of quantum computers and demonstrated ways to overcome their impact.