{
  "annotation_id": "3da9d2f1-abee-4a72-8c51-5ea4d251b2d2",
  "date_created": "2026-03-02T18:01:45.845000Z",
  "date_modified": "2026-03-02T18:01:45.845000Z",
  "file_hash": "64f59a6cdf3a24b375f22fd9b84a1e59e0ad6b92bf05cd4584646c7dfaa8733a",
  "private": false,
  "record": {
    "abstract": "A formalism for two-photon Stokes parameters is introduced to describe the\npolarization entanglement of photon pairs. This leads to the definition of a\ndegree of two-photon polarization, which describes the extent to which the two\nphotons act as a pair and not as two independent photons. This pair-wise\npolarization is complementary to the degree of polarization of the individual\nphotons. The approach provided here has a number of advantages over the density\nmatrix formalism: it allows the one- and two-photon features of the state to be\nseparated and offers a visualization of the mixedness of the state of\npolarization.",
    "arxiv_id": "quant-ph/0110172",
    "authors": [
      "Ayman F. Abouraddy",
      "Alexander V. Sergienko",
      "Bahaa E. A. Saleh",
      "Malvin C. Teich"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0030-4018(01)01645-5",
    "journal_ref": "Opt. Comm. 201, 93-98 (2002)",
    "title": "Quantum Entanglement and the Two-Photon Stokes Parameters",
    "url": "https://arxiv.org/abs/quant-ph/0110172"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "30198d3a-f9b3-436d-a1c6-9e014281c93b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}