{
  "annotation_id": "31234bbe-65ed-43f3-bbd5-79c4d60a96fc",
  "date_created": "2026-03-02T18:02:41.702000Z",
  "date_modified": "2026-03-02T18:02:41.702000Z",
  "file_hash": "a629501541aaef001e9212835278752643056044207435c67a0ccd244c9965a4",
  "private": false,
  "record": {
    "abstract": "We show how to decompose any density matrix of the simplest binary composite\nsystems, whether separable or not, in terms of only product vectors. We\ndetermine for all cases the minimal number of product vectors needed for such a\ndecomposition. Separable states correspond to mixing from one to four pure\nproduct states. Inseparable states can be described as pseudomixtures of four\nor five pure product states, and can be made separable by mixing them with one\nor two pure product states.",
    "arxiv_id": "quant-ph/9801024",
    "authors": [
      "Anna Sanpera",
      "Rolf Tarrach",
      "Guifre Vidal"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.58.826",
    "journal_ref": "Phys.Rev. A58 (1998) 826-830",
    "title": "Quantum inseparability as local pseudomixture",
    "url": "https://arxiv.org/abs/quant-ph/9801024"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9bf3837f-8b26-4164-beab-64d4e7b9e1fe",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}