A tantalum-based fluxonium qubit achieves 96.2% (97.8% with a parametric amplifier) single-shot readout fidelity and 99.6% repeatability, limited by measurement-induced state mixing.
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High-fidelity QND readout and measurement back-action in a Tantalum-based high-coherence fluxonium qubit
A tantalum-based fluxonium qubit achieves 96.2% (97.8% with a parametric amplifier) single-shot readout fidelity and 99.6% repeatability, limited by measurement-induced state mixing.