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    "source_story_id": "tmp-brief-quantum-distance-certification",
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    "headline": "Quantum Error-Correction Distances Get Exact Certificates",
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    "dek": "Rank-based dynamic programming certifies codes up to 31,200 qubits and circuits with 800,000 fault mechanisms.",
    "summary": "Rank-based dynamic programming certifies codes up to 31,200 qubits and circuits with 800,000 fault mechanisms.",
    "body_text": "An audit of 26 recent papers finds overestimated or non-tight distances in ten. For one IBM memory circuit, the certified distance is 16 rather than the assumed 18; redesigned schedules recover 18 with an extra timestep.",
    "why_it_matters": "Rank-based dynamic programming certifies codes up to 31,200 qubits and circuits with 800,000 fault mechanisms.",
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    "tags": [
      "quantum error correction",
      "certification",
      "circuits"
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      "source_id": "source-2026-11-06-020",
      "title": "arXiv preprint 2611.08247, original v1",
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