{
  "annotation_id": "7894ca25-8bc2-44fd-87d6-46e44fd456f9",
  "date_created": "2026-03-02T18:01:41.784000Z",
  "date_modified": "2026-03-02T18:01:41.784000Z",
  "file_hash": "990769eab1846a75895f9cc1aa453742155ee91e7d2dd7169f102fe46cd805ac",
  "private": false,
  "record": {
    "abstract": "We discuss several aspects of multiparticle mixed state entanglement and its\nexperimental detection. First we consider entanglement between two particles\nwhich is robust against disposals of other particles. To completely detect\nthese kinds of entanglement, full knowledge of the multiparticle density matrix\n(or of all reduced density matrixes) is required. Then we review the relation\nof the separability properties of l-partite splittings of a state $\\rho$ to its\nmultipartite entanglement properties. We show that it suffices to determine the\ndiagonal matrix elements of $\\rho$ in a certain basis in order to detect\nmultiparticle entanglement properties of $\\rho$. We apply these observations to\nanalyze two recent experiments, where multiparticle entangled states of 3 (4)\nparticles were produced. Finally, we focus on bound entangled states\n(non-separable, non-distillable states) and show that they can be activated by\njoint actions of the parties. We also provide several examples which show the\nactivation of bound entanglement with bound entanglement.",
    "arxiv_id": "quant-ph/0011025",
    "authors": [
      "W. D\u00fcr",
      "J. I. Cirac"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/34/35/310",
    "journal_ref": "Journal of Physics A: Mathematical and General, Vol. 34, No. 35,\n  6837-6850 (2001)",
    "title": "Multiparticle entanglement and its experimental detection",
    "url": "https://arxiv.org/abs/quant-ph/0011025"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ed191585-7096-4b53-8669-218c090f4ff6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}