{
  "schema": "surface-code-science-example/v1",
  "split": "validation",
  "source_url": "https://zenodo.org/records/6804040",
  "source_license": "CC-BY-4.0",
  "source_attribution": "Google Quantum AI, Sycamore surface-code memory experiments",
  "condition": "surface_code_bZ_d3_r09_center_3_5",
  "source_shot_index_zero_based": 39760,
  "selection": "First validation shot for the fixed d3/Z/r9/center_3_5 condition; no prediction-based selection",
  "source_sha256": {
    "circuit_ideal.stim": "81a26915aa77d74c16190927fb88d5c6524f35062af1cfafd3f265cb3f63b850",
    "detection_events.b8": "023e37f8f3df5bb63974e88469403218872cf214a0889e5fe39ef922bec17207",
    "obs_flips_actual.01": "10d0a8137815cc001d44cd061fb7ef54781c191f34776e71eef5602e54d0de81"
  },
  "distance": 3,
  "basis": "Z",
  "rounds": 9,
  "data_qubits": [
    [
      1.0,
      5.0
    ],
    [
      2.0,
      4.0
    ],
    [
      2.0,
      6.0
    ],
    [
      3.0,
      3.0
    ],
    [
      3.0,
      5.0
    ],
    [
      3.0,
      7.0
    ],
    [
      4.0,
      4.0
    ],
    [
      4.0,
      6.0
    ],
    [
      5.0,
      5.0
    ]
  ],
  "check_qubits": [
    [
      1.0,
      4.0
    ],
    [
      2.0,
      5.0
    ],
    [
      2.0,
      7.0
    ],
    [
      3.0,
      4.0
    ],
    [
      3.0,
      6.0
    ],
    [
      4.0,
      3.0
    ],
    [
      4.0,
      5.0
    ],
    [
      5.0,
      6.0
    ]
  ],
  "detectors": [
    {
      "id": 0,
      "coords": [
        2.0,
        5.0,
        0.0
      ],
      "event": 1
    },
    {
      "id": 1,
      "coords": [
        4.0,
        3.0,
        0.0
      ],
      "event": 0
    },
    {
      "id": 2,
      "coords": [
        2.0,
        7.0,
        0.0
      ],
      "event": 0
    },
    {
      "id": 3,
      "coords": [
        4.0,
        5.0,
        0.0
      ],
      "event": 0
    },
    {
      "id": 4,
      "coords": [
        1.0,
        4.0,
        1.0
      ],
      "event": 0
    },
    {
      "id": 5,
      "coords": [
        2.0,
        5.0,
        1.0
      ],
      "event": 1
    },
    {
      "id": 6,
      "coords": [
        2.0,
        7.0,
        1.0
      ],
      "event": 0
    },
    {
      "id": 7,
      "coords": [
        3.0,
        4.0,
        1.0
      ],
      "event": 1
    },
    {
      "id": 8,
      "coords": [
        3.0,
        6.0,
        1.0
      ],
      "event": 0
    },
    {
      "id": 9,
      "coords": [
        4.0,
        3.0,
        1.0
      ],
      "event": 0
    },
    {
      "id": 10,
      "coords": [
        4.0,
        5.0,
        1.0
      ],
      "event": 0
    },
    {
      "id": 11,
      "coords": [
        5.0,
        6.0,
        1.0
      ],
      "event": 0
    },
    {
      "id": 12,
      "coords": [
        1.0,
        4.0,
        2.0
      ],
      "event": 0
    },
    {
      "id": 13,
      "coords": [
        2.0,
        5.0,
        2.0
      ],
      "event": 0
    },
    {
      "id": 14,
      "coords": [
        2.0,
        7.0,
        2.0
      ],
      "event": 0
    },
    {
      "id": 15,
      "coords": [
        3.0,
        4.0,
        2.0
      ],
      "event": 0
    },
    {
      "id": 16,
      "coords": [
        3.0,
        6.0,
        2.0
      ],
      "event": 0
    },
    {
      "id": 17,
      "coords": [
        4.0,
        3.0,
        2.0
      ],
      "event": 0
    },
    {
      "id": 18,
      "coords": [
        4.0,
        5.0,
        2.0
      ],
      "event": 0
    },
    {
      "id": 19,
      "coords": [
        5.0,
        6.0,
        2.0
      ],
      "event": 0
    },
    {
      "id": 20,
      "coords": [
        1.0,
        4.0,
        3.0
      ],
      "event": 0
    },
    {
      "id": 21,
      "coords": [
        2.0,
        5.0,
        3.0
      ],
      "event": 0
    },
    {
      "id": 22,
      "coords": [
        2.0,
        7.0,
        3.0
      ],
      "event": 0
    },
    {
      "id": 23,
      "coords": [
        3.0,
        4.0,
        3.0
      ],
      "event": 0
    },
    {
      "id": 24,
      "coords": [
        3.0,
        6.0,
        3.0
      ],
      "event": 1
    },
    {
      "id": 25,
      "coords": [
        4.0,
        3.0,
        3.0
      ],
      "event": 0
    },
    {
      "id": 26,
      "coords": [
        4.0,
        5.0,
        3.0
      ],
      "event": 0
    },
    {
      "id": 27,
      "coords": [
        5.0,
        6.0,
        3.0
      ],
      "event": 0
    },
    {
      "id": 28,
      "coords": [
        1.0,
        4.0,
        4.0
      ],
      "event": 0
    },
    {
      "id": 29,
      "coords": [
        2.0,
        5.0,
        4.0
      ],
      "event": 0
    },
    {
      "id": 30,
      "coords": [
        2.0,
        7.0,
        4.0
      ],
      "event": 0
    },
    {
      "id": 31,
      "coords": [
        3.0,
        4.0,
        4.0
      ],
      "event": 0
    },
    {
      "id": 32,
      "coords": [
        3.0,
        6.0,
        4.0
      ],
      "event": 0
    },
    {
      "id": 33,
      "coords": [
        4.0,
        3.0,
        4.0
      ],
      "event": 0
    },
    {
      "id": 34,
      "coords": [
        4.0,
        5.0,
        4.0
      ],
      "event": 0
    },
    {
      "id": 35,
      "coords": [
        5.0,
        6.0,
        4.0
      ],
      "event": 0
    },
    {
      "id": 36,
      "coords": [
        1.0,
        4.0,
        5.0
      ],
      "event": 0
    },
    {
      "id": 37,
      "coords": [
        2.0,
        5.0,
        5.0
      ],
      "event": 0
    },
    {
      "id": 38,
      "coords": [
        2.0,
        7.0,
        5.0
      ],
      "event": 0
    },
    {
      "id": 39,
      "coords": [
        3.0,
        4.0,
        5.0
      ],
      "event": 0
    },
    {
      "id": 40,
      "coords": [
        3.0,
        6.0,
        5.0
      ],
      "event": 0
    },
    {
      "id": 41,
      "coords": [
        4.0,
        3.0,
        5.0
      ],
      "event": 0
    },
    {
      "id": 42,
      "coords": [
        4.0,
        5.0,
        5.0
      ],
      "event": 0
    },
    {
      "id": 43,
      "coords": [
        5.0,
        6.0,
        5.0
      ],
      "event": 0
    },
    {
      "id": 44,
      "coords": [
        1.0,
        4.0,
        6.0
      ],
      "event": 0
    },
    {
      "id": 45,
      "coords": [
        2.0,
        5.0,
        6.0
      ],
      "event": 0
    },
    {
      "id": 46,
      "coords": [
        2.0,
        7.0,
        6.0
      ],
      "event": 0
    },
    {
      "id": 47,
      "coords": [
        3.0,
        4.0,
        6.0
      ],
      "event": 0
    },
    {
      "id": 48,
      "coords": [
        3.0,
        6.0,
        6.0
      ],
      "event": 1
    },
    {
      "id": 49,
      "coords": [
        4.0,
        3.0,
        6.0
      ],
      "event": 0
    },
    {
      "id": 50,
      "coords": [
        4.0,
        5.0,
        6.0
      ],
      "event": 0
    },
    {
      "id": 51,
      "coords": [
        5.0,
        6.0,
        6.0
      ],
      "event": 1
    },
    {
      "id": 52,
      "coords": [
        1.0,
        4.0,
        7.0
      ],
      "event": 0
    },
    {
      "id": 53,
      "coords": [
        2.0,
        5.0,
        7.0
      ],
      "event": 0
    },
    {
      "id": 54,
      "coords": [
        2.0,
        7.0,
        7.0
      ],
      "event": 0
    },
    {
      "id": 55,
      "coords": [
        3.0,
        4.0,
        7.0
      ],
      "event": 0
    },
    {
      "id": 56,
      "coords": [
        3.0,
        6.0,
        7.0
      ],
      "event": 1
    },
    {
      "id": 57,
      "coords": [
        4.0,
        3.0,
        7.0
      ],
      "event": 0
    },
    {
      "id": 58,
      "coords": [
        4.0,
        5.0,
        7.0
      ],
      "event": 1
    },
    {
      "id": 59,
      "coords": [
        5.0,
        6.0,
        7.0
      ],
      "event": 0
    },
    {
      "id": 60,
      "coords": [
        1.0,
        4.0,
        8.0
      ],
      "event": 0
    },
    {
      "id": 61,
      "coords": [
        2.0,
        5.0,
        8.0
      ],
      "event": 0
    },
    {
      "id": 62,
      "coords": [
        2.0,
        7.0,
        8.0
      ],
      "event": 0
    },
    {
      "id": 63,
      "coords": [
        3.0,
        4.0,
        8.0
      ],
      "event": 0
    },
    {
      "id": 64,
      "coords": [
        3.0,
        6.0,
        8.0
      ],
      "event": 0
    },
    {
      "id": 65,
      "coords": [
        4.0,
        3.0,
        8.0
      ],
      "event": 0
    },
    {
      "id": 66,
      "coords": [
        4.0,
        5.0,
        8.0
      ],
      "event": 0
    },
    {
      "id": 67,
      "coords": [
        5.0,
        6.0,
        8.0
      ],
      "event": 0
    },
    {
      "id": 68,
      "coords": [
        2.0,
        5.0,
        9.0
      ],
      "event": 0
    },
    {
      "id": 69,
      "coords": [
        4.0,
        3.0,
        9.0
      ],
      "event": 0
    },
    {
      "id": 70,
      "coords": [
        2.0,
        7.0,
        9.0
      ],
      "event": 0
    },
    {
      "id": 71,
      "coords": [
        4.0,
        5.0,
        9.0
      ],
      "event": 0
    }
  ],
  "target_logical_flip": 0,
  "model_probability": null,
  "output_note": "Decoder probability and threshold are symbolic, not an inference result. The label is a public validation target."
}