{
  "annotation_id": "cad8a388-03d5-4d95-b14f-9d2bb1de0590",
  "date_created": "2026-03-02T18:01:38.861000Z",
  "date_modified": "2026-03-02T18:01:38.861000Z",
  "file_hash": "d2f522ccea390ced86191955966a83c8704c274f7fe1171fa8fed259b4016e0e",
  "private": false,
  "record": {
    "abstract": "Consider a ring of N qubits in a translationally invariant quantum state. We\nask to what extent each pair of nearest neighbors can be entangled. Under\ncertain assumptions about the form of the state, we find a formula for the\nmaximum possible nearest-neighbor entanglement. We then compare this maximum\nwith the entanglement achieved by the ground state of an antiferromagnetic ring\nconsisting of an even number of spin-1/2 particles. We find that, though the\nantiferromagnetic ground state does not maximize the nearest-neighbor\nentanglement relative to all other states, it does so relative to other states\nhaving zero z-component of spin.",
    "arxiv_id": "quant-ph/0009041",
    "authors": [
      "Kevin M. O\u0027Connor",
      "William K. Wootters"
    ],
    "categories": [
      "quant-ph",
      "cond-mat"
    ],
    "doi": "10.1103/PhysRevA.63.052302",
    "journal_ref": "Phys. Rev. A 63 (2001) 052302",
    "title": "Entangled Rings",
    "url": "https://arxiv.org/abs/quant-ph/0009041"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "614d453f-57de-469e-ab3d-63f1d80f753e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}