Logical Qubits (LQ)
48
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Quantinuum

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  • 2025-11-05 LQ 48
    Quantinuum Helios: 48 Logical Qubits at ~2:1 Base-to-Logical Overhead

    Quantinuum commercially launched Helios, achieving 48 error-corrected LQ (≤2:1 overhead), 50 LQ error-detected, and 94 LQ globally entangled — all with better-than-base performance. Key fidelities: 2Q gate 99.921%, 1Q gate 99.9975%, logical SPAM 99.99%.

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