{
  "annotation_id": "725821f0-1fdd-4a50-a05a-41ecb01e683b",
  "date_created": "2026-03-02T18:02:31.106000Z",
  "date_modified": "2026-03-02T18:02:31.106000Z",
  "file_hash": "0c116851126238016cc8a90eeb06d8ea82342688cd7ecc917c3f62f876d51ff2",
  "private": false,
  "record": {
    "abstract": "We study the entanglement between pairs of qubits in a random\nantiferromagnetic spin-1/2 chain at zero temperature. We show that some very\ndistant pairs of qubits are highly entangled, being almost pure Bell states.\nFurthermore, the probability to obtain such spin pairs is proportional to the\nchain disorder strenght and inversely proportional to the square of their\nseparation.",
    "arxiv_id": "quant-ph/0608220",
    "authors": [
      "Jose A. Hoyos",
      "Gustavo Rigolin"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.dis-nn"
    ],
    "doi": "10.1103/PhysRevA.74.062324",
    "journal_ref": "Phys. Rev. A 74, 062324 (2006)",
    "title": "Quantum channels in random spin chains",
    "url": "https://arxiv.org/abs/quant-ph/0608220"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7b3eeebb-4d63-4979-9431-bc7f7f8c481f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}