A Josephson-junction longitudinal readout achieves 99.8% measured fidelity in 202 ns and an estimated pure fidelity above 99.9% without first-stage amplification.
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99.9%-fidelity in measuring a superconducting qubit
A Josephson-junction longitudinal readout achieves 99.8% measured fidelity in 202 ns and an estimated pure fidelity above 99.9% without first-stage amplification.