Amazingly accurate Quantum computing [News]

For Quantum computing to ever fulfill its promise, it will have to deal with errors. That‚s been a real problem until recently, because although scientists have come up with error-correction codes, the quantum machines available couldn‚t use them. Now researchers have finally created a small quantum-computing array that for the first time performs with enough accuracy to allow for error correction, paving the way toward practical machines that could outperform ordinary computers.