Limits RegistryPUBLIC RECORD
Limits RegistryQuantinuum's H2 trapped-ion quantum computer achieved a Quantum Volume of 2^20 (1,048,576) in April 2024, the highest reported figure on this composite benchmark at the time, reflecting trapped-ion systems' typically higher gate fidelities compared to superconducting qubits despite lower raw qubit counts. Quantum Volume is one of several competing benchmarks and does not capture every dimension of quantum computing performance.
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Quantinuum's H2 trapped-ion quantum computer achieved a Quantum Volume of 2^20 (1,048,576) in April 2024, the highest reported figure on this composite benchmark at the time, reflecting trapped-ion systems' typically higher gate fidelities compared to superconducting qubits despite lower raw qubit counts. Quantum Volume is one of several competing benchmarks and does not capture every dimension of quantum computing performance.
The highest Quantum Volume — an IBM-defined benchmark combining qubit count, connectivity, gate fidelity, and error rates into a single number — reported for any quantum computer as of the claim date.
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Current frontiers derived from accepted Claims.
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The frontier as it changed over time.
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1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-QUANTINUUM-QUANTUM-VOLUME
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Limits Registry. LR-QUANTINUUM-QUANTUM-VOLUME. Highest quantum volume achieved by a quantum computer. 2026.