Quantum computers ditch all the lasers

摘要

They will be the ultimate multitaskers - but quantum computers might take a bit of juggling to operate. Now, a team has simplified their inner workings. Computers that take advantage of quantum laws allowing particles to exist in multiple states at the same time promise to run millions of calculations at once. One of the candidate technologies involves ion traps, which hold and manipulate charged particles, called ions, to encode information. But to make a processor that works faster than a classical computer would require millions of such traps, each controlled by its own precisely aligned laser -making it extremely complicated.