Thanks to some ingenious engineers at Google, you can now turn your desktop PC into a quantum computer. Well, OK, not quite: You can simulate a quantum computer on your PC by running the Quantum Computing Playground web app for Chrome. The Playground allows you to run famous quantum algorithms, such as Grover's, or even to write your own quantum script. Short of buying your own quantum computer -- which, despite what D-Wave says, you can't -- this is the next best thing.