Quantum computing story of the day: "Quantum computer works best switched off". Apparently this exploits the so-called "quantum Zeno effect", but I freely admit that I don't understand QM well enough to understand how this works. My favorite passage from the article:

"It is very bizarre that you know your computer has not run but you also know what the answer is," says team member Onur Hosten.

This scheme could have an advantage over straightforward quantum computing. "A non-running computer produces fewer errors," says Hosten.

Here's a related article.