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Limits RegistryIn 2024, Google Quantum AI reported the first experimental demonstration of quantum error correction operating below the surface code's break-even threshold, with each step up in code distance suppressing the logical error rate by a factor of about 2.14, published in Nature. This followed the team's 2023 result showing error suppression scaling with code distance, and represents a key milestone toward fault-tolerant quantum computing, though it remains far from the error rates needed for large-scale useful computation.
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In 2024, Google Quantum AI reported the first experimental demonstration of quantum error correction operating below the surface code's break-even threshold, with each step up in code distance suppressing the logical error rate by a factor of about 2.14, published in Nature. This followed the team's 2023 result showing error suppression scaling with code distance, and represents a key milestone toward fault-tolerant quantum computing, though it remains far from the error rates needed for large-scale useful computation.
The logical-to-physical error suppression factor demonstrated by Google Quantum AI's surface-code experiment upon increasing code distance, the first published demonstration operating below the surface code's error-correction threshold.
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Permanent ID limitsregistry.com/limits/LR-SURFACE-CODE-BELOW-THRESHOLD
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Limits Registry. LR-SURFACE-CODE-BELOW-THRESHOLD. First demonstration of quantum error correction below the surface-code threshold. 2026.