Trapped ions used in high-fidelity quantum gate. (Technology News: Emerging Technologies).

Semiconductor International, May, 2003 by Singer, Peter (Judge)

A practical quantum computer is probably decades away, but it got a step closer with the recent demonstration of a high-fidelity, two-ion quantum bit phase gate by a team of researchers from the National Institute of Standards and Technology (NIST, Caithersburg, Md.), University of Colorado (Boulder, Colo.), University of Oxford (Oxford, UK) and Institute of Physics (Belgrade, Serbia-Montenegro). As reported in the March 27 issue of Nature, the properties of the gate make it attractive for a multiplexed array of quantum bits -- called "qubits" in quantum lingo -- that could enable scaling to large numbers of qubits.

The advantages that quantum computing has over classical computing as it is performed today are mainly in the areas of memory storage and...

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