Any day now, Google is expected to achieve quantum supremacy—the use of a quantum computer to solve a problem that even the most advanced supercomputer can’t unravel. That milestone, which Google has said it will reach by year-end, will no doubt be greeted with headlines proclaiming the dawn of the quantum computing age. Prepare for lots of stories about how quantum computing will soon do everything from inventing wonderful new pharmaceuticals and almost-magical new materials (good) to rendering obsolete all existing public-key encryption (not so good). There’s plenty of momentum. Earlier this month, Intel Corp. researchers unveiled a superconducting chip […]
