fidelity
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Science
High-speed control technique enables record fidelity in superconducting qubits
In the artist’s impression of a recent MIT experiment, the sphere in the center represents a qubit, illuminated by two control signals: electric charge (blue) and magnetic flux (purple). These control signals are designed to combine to produce circularly polarized microwaves that are not affected by counter-rotation effects. The signals consist of repeating waveforms and represent the similarity of control…
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