{
  "annotation_id": "f965eeb7-e04d-4c81-b709-0c699e5b0b8e",
  "date_created": "2026-03-02T18:01:56.680000Z",
  "date_modified": "2026-03-02T18:01:56.680000Z",
  "file_hash": "7f07a77dde92db978813d6fe7a6ddbd02d70789449ec42e31bf21dd949deda4b",
  "private": false,
  "record": {
    "abstract": "Many quantum information protocols require a Bell-state measurement of\nentangled systems. Most optical Bell-state measurements utilize two-photon\ninterference at a beam splitter. By creating polarization-entangled photons\nwith spontaneous parametric down-conversion using a first-order\nHermite-Gaussian pump beam, we invert the usual interference behavior and\nperform an incomplete Bell-state measurement in the coincidence basis. We\ndiscuss the possibility of a complete Bell-state measurement in the coincidence\nbasis using hyperentangled states [Phys. Rev. A, \\textbf{58}, R2623 (1998)].",
    "arxiv_id": "quant-ph/0212058",
    "authors": [
      "S. P. Walborn",
      "W. A. T. Nogueira",
      "S. P\u00e1dua",
      "C. H. Monken"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1209/epl/i2003-00339-6",
    "journal_ref": "Europhysics Letters 62, 161-167 (2003).",
    "title": "Optical Bell-state analysis in the coincidence basis",
    "url": "https://arxiv.org/abs/quant-ph/0212058"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c6ece70f-dc38-44f8-ad1d-7d81e1326a9c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}