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In the race to build the first, useful, large-scale quantum computer, researchers are exploring many different routes, each with their own strengths and limitations. Approaches that use neutral atoms offer a scalable system, but the consistency of atom interactions—their quantum fidelity—lags behind that of other architectures. Now, building on recent improvements in controlling atoms in highly excited “Rydberg” states, Harry Levine at Harvard University and colleagues have demonstrated a neutral-atom quantum computer that achieves fidelities rivaling its highest-performing competitors.

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Category: Science