Major step taken toward error-free computing

Stable quantum information could make possible solving problems in record time

By Gabriel Popkin, 12:33 PM April 23, 2014

Quantum computing has overcome an important barrier: Scientists have achieved nearly perfect control over a bit of quantum information in a way that could bring them a step closer to error-free calculations.

All digital information comes in tiny packets called bits. In consumer devices, bits are chunks of magnetic or electric material that flip between two distinct states. But thanks to quantum weirdness, certain minuscule objects called quantum bits, or qubits, can exist in two states at once...

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