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    "headline": "Two Logical Qubits Cross 93 Percent Bell Fidelity",
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    "dek": "A 120-qubit superconducting processor forms distance-three and distance-five surface codes, then entangles logical qubits through lattice surgery.",
    "summary": "A 120-qubit superconducting processor forms distance-three and distance-five surface codes, then entangles logical qubits through lattice surgery.",
    "body_text": "The team reports logical error per round below one percent in selected codes, Bell-state fidelity above 93 percent and logical teleportation fidelities from 78 to 93 percent. Component selection and noise-informed decoding are part of the demonstrated stack.",
    "why_it_matters": "A 120-qubit superconducting processor forms distance-three and distance-five surface codes, then entangles logical qubits through lattice surgery.",
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    "tags": [
      "quantum error correction",
      "surface codes",
      "lattice surgery",
      "superconducting qubits"
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      "source_id": "source-2026-10-26-018",
      "title": "arXiv preprint 2610.32347, original v1",
      "publisher": "arXiv",
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      "published_at": "2026-10-23T04:40:47.000-04:00",
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    "title": "Two Logical Qubits Cross 93 Percent Bell Fidelity",
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