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20 Entangled Qubits Bring the Quantum Computer Closer

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20 atoms entangled

This conceptual image shows a string of 20 atoms that were entangled in an experiment in Innsbruck, Austria. Researchers observed entangled pairs (blue), triplets (pink), and quadruplets (yellow).

Credit: Harald Ritsch/IQOQI Innsbruck

In 1981, Richard Feynman suggested that a quantum computer might be able to simulate the evolution of quantum systems much better than classical computers. Except for several proof-of-principle experiments, no working quantum computer has yet been built.

From IEEE Spectrum
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