{
  "annotation_id": "63a9e1cb-2877-4547-956b-757e8c3987db",
  "date_created": "2026-03-02T18:02:34.049000Z",
  "date_modified": "2026-03-02T18:02:34.049000Z",
  "file_hash": "0402452b0018c2000c2802115e3a27ea61f193ab7322b4dd3435284aaba86621",
  "private": false,
  "record": {
    "abstract": "We study genuine tripartite entanglement shared among the spins of three\nlocalized fermions in the non-interacting Fermi gas at zero temperature.\nFirstly, we prove analytically with the aid of entanglement witnesses that in a\nparticular configuration the three fermions are genuinely tripartite entangled.\nThen various three-fermion configurations are investigated in order to quantify\nand calculate numerically the amount of genuine tripartite entanglement present\nin the system. Further we give a lower and an upper limit to the maximum\ndiameter of the three-fermion configuration below which genuine tripartite\nentanglement exists and find that this distance is comparable with the maximum\nseparation between two entangled fermions. The upper and lower limit turn to be\nvery close to each other indicating that the applied witness operator is well\nsuited to reveal genuine tripartite entanglement in the collection of\nnon-interacting fermions.",
    "arxiv_id": "quant-ph/0701246",
    "authors": [
      "T. V\u00e9rtesi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.75.042330",
    "journal_ref": "Phys. Rev. A 75, 042330 (2007)",
    "title": "Genuine tripartite entanglement in the non-interacting Fermi gas",
    "url": "https://arxiv.org/abs/quant-ph/0701246"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "454abcb3-39be-4428-8c36-88a905916ad3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}