{
  "annotation_id": "14c598c4-6ec3-438e-b36f-65241fe90a48",
  "date_created": "2026-03-02T18:02:06.924000Z",
  "date_modified": "2026-03-02T18:02:06.924000Z",
  "file_hash": "b2d755e6f9dc439cf4fd82561f12ced8a748f32866b14684df5335466cb50b54",
  "private": false,
  "record": {
    "abstract": "We show that with respect to any bipartite division of modes, pure fermion\ngaussian states display the same type of structure in its entanglement of modes\nas that of the BCS wave function, namely, that of a tensor product of entangled\ntwo-mode squeezed fermion states. We show that this structure applies to a\nwider class of \"isotropic\" mixed fermion states, for which we derive necessary\nand sufficient conditions for mode entanglement.",
    "arxiv_id": "quant-ph/0404176",
    "authors": [
      "Alonso Botero",
      "Benni Reznik"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.str-el"
    ],
    "doi": "10.1016/j.physleta.2004.08.037",
    "journal_ref": "Physics Letters A 331 (2004) 39-44",
    "title": "BCS-like Modewise Entanglement of Fermion Gaussian States",
    "url": "https://arxiv.org/abs/quant-ph/0404176"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "84b55606-89c8-467b-8d74-6968ba9e7005",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}