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Limits RegistryA University of Oxford team led by David Lucas achieved single-qubit gate errors of 1.5x10^-7 — fidelity above 99.99998% — on a trapped calcium-43 ion controlled by chip-integrated microwave electronics at room temperature without magnetic shielding. Published in Physical Review Letters in June 2025, it is the lowest error yet reported for any quantum computing platform.
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A University of Oxford team led by David Lucas achieved single-qubit gate errors of 1.5x10^-7 — fidelity above 99.99998% — on a trapped calcium-43 ion controlled by chip-integrated microwave electronics at room temperature without magnetic shielding. Published in Physical Review Letters in June 2025, it is the lowest error yet reported for any quantum computing platform.
The smallest benchmarked error per single-qubit gate achieved on any physical qubit platform.
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Permanent ID limitsregistry.com/limits/LR-LOWEST-SINGLE-QUBIT-GATE-ERROR
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Limits Registry. LR-LOWEST-SINGLE-QUBIT-GATE-ERROR. Lowest single-qubit gate error ever measured. 2026.