{
  "annotation_id": "83327871-6b73-4388-95a1-c3e214f81a2e",
  "date_created": "2026-03-02T18:02:06.650000Z",
  "date_modified": "2026-03-02T18:02:06.650000Z",
  "file_hash": "257bb9fd92d21da561867cf9fa8f9e7c1a78ec5beb52c352beab896b0f0682d6",
  "private": false,
  "record": {
    "abstract": "We present a theoretical method to determine the multipartite entanglement\nbetween different partitions of multimode, fully or partially symmetric\nGaussian states of continuous variable systems. For such states, we determine\nthe exact expression of the logarithmic negativity and show that it coincides\nwith that of equivalent two--mode Gaussian states. Exploiting this reduction,\nwe demonstrate the scaling of the multipartite entanglement with the number of\nmodes and its reliable experimental estimate by direct measurements of the\nglobal and local purities.",
    "arxiv_id": "quant-ph/0406053",
    "authors": [
      "Gerardo Adesso",
      "Alessio Serafini",
      "Fabrizio Illuminati"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.other",
      "hep-th",
      "math-ph",
      "math.MP",
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevLett.93.220504",
    "journal_ref": "Phys.Rev.Lett. 93 (2004) 220504",
    "title": "Quantification and scaling of multipartite entanglement in continuous   variable systems",
    "url": "https://arxiv.org/abs/quant-ph/0406053"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "28b4ebcb-e5c9-4caf-8f13-ffe0bed6eb6a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}