{
  "annotation_id": "2fb3310b-7963-4bd9-a9a0-2a9df5f00f11",
  "date_created": "2026-03-02T18:01:44.800000Z",
  "date_modified": "2026-03-02T18:01:44.800000Z",
  "file_hash": "951ff3f95c251b8b772bf9a20aac417ed835b35db80c4f0f5e1186253267553c",
  "private": false,
  "record": {
    "abstract": "Two classically identical expressions for the mutual information generally\ndiffer when the two systems involved are quantum. We investigate this\ndifference -- quantum discord -- and show that it can be used as a criterion\nfor the classicality of the correlations. We also show that quantum discord can\nbe used for describing the selection of the preferred, effectively classical,\npointer states.",
    "arxiv_id": "quant-ph/0105072",
    "authors": [
      "Harold Ollivier",
      "Wojciech H. Zurek"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.88.017901",
    "title": "Introducing Quantum Discord",
    "url": "https://arxiv.org/abs/quant-ph/0105072"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d62f1cdc-c5a3-4407-bc04-88952c76e2b3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}