{
  "annotation_id": "133d9cac-a350-4b18-910f-fd8c0ae4c8f0",
  "date_created": "2026-03-02T18:02:17.266000Z",
  "date_modified": "2026-03-02T18:02:17.266000Z",
  "file_hash": "d6de15f3c1eef0d525730edecc20f11c6f2c66aff2d883daf0d13bb16e08c8d6",
  "private": false,
  "record": {
    "abstract": "Genuine 3-qubit entanglement comes in two different inconvertible types\nrepresented by the Greenberger-Horne-Zeilinger (GHZ) state and the W state. We\ndescribe a specific method based on local positive operator valued measures and\nclassical communication that can convert the ideal N-qubit GHZ state to a state\narbitrarily close to the ideal N-qubit W state. We then experimentally\nimplement this scheme in the 3-qubit case and characterize the input and the\nfinal state using 3-photon quantum state tomography.",
    "arxiv_id": "quant-ph/0506190",
    "authors": [
      "P. Walther",
      "K. J. Resch",
      "A. Zeilinger"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.94.240501",
    "journal_ref": "Phys. Rev. Lett. 94, 240501 (2005)",
    "title": "Local Conversion of Greenberger-Horne-Zeilinger States to Approximate W   States",
    "url": "https://arxiv.org/abs/quant-ph/0506190"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "130c8bad-ea2e-4b37-a592-3ae118a11828",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}