Quantum error suppression

Researchers at the National Institutes of Standards and Technology (NIST) have developed a powerful way to inhibit errors produced by a quantum computer. Writing in the latest issue of Nature, the team explains how they succeeded in making an array of about 1000 ultracold beryllium ions behave as a more robust qubit by blasting the array with a programmed sequence of microwave pulses. NIST's John Bollinger and colleagues suggest that the microwave pulses can quickly reverse problems caused by stray electric or magnetic fields before they accumulate into errors.