{
  "annotation_id": "8af6e9e9-29ca-4bcf-895a-706088b7d12c",
  "date_created": "2026-03-02T18:02:12.710000Z",
  "date_modified": "2026-03-02T18:02:12.710000Z",
  "file_hash": "5b8543985810a5ec72fdb5402b61dc9d106eec0de3c075362f72694b845e1828",
  "private": false,
  "record": {
    "abstract": "We have performed the first experimental tomographic reconstruction of a\nthree-photon polarization state. Quantum state tomography is a powerful tool\nfor fully describing the density matrix of a quantum system. We measured 64\nthree-photon polarization correlations and used a \"maximum-likelihood\"\nreconstruction method to reconstruct the GHZ state. The entanglement class has\nbeen characterized using an entanglement witness operator and the maximum\npredicted values for the Mermin inequality was extracted.",
    "arxiv_id": "quant-ph/0412151",
    "authors": [
      "Kevin J. Resch",
      "Philip Walther",
      "Anton Zeilinger"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.94.070402",
    "journal_ref": "Phys. Rev. Lett. 94, 070402 (2005)",
    "title": "Full characterization of a three-photon GHZ state using quantum state   tomography",
    "url": "https://arxiv.org/abs/quant-ph/0412151"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c4a06200-279b-47d3-b71d-34cbcbe0f0b6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}