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How Close Are We, Really, to Building a Quantum Computer?

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Superconducting test chip

Intel has created 49- and 17-qubit (shown here) superconducting test chips for quantum computing.

Credit: Intel Corporation

The race is on to build the world's first meaningful quantum computer—one that can deliver the technology's long-promised ability to help scientists do things like develop miraculous new materials, encrypt data with near-perfect security and accurately predict how Earth's climate will change. Such a machine is likely more than a decade away, but IBM, Microsoft, Google, Intel and other tech heavyweights breathlessly tout each tiny, incremental step along the way.

From Scientific American
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