{
  "annotation_id": "d100900c-566f-4413-8acc-a71d14a151b3",
  "date_created": "2026-03-02T18:02:47.725000Z",
  "date_modified": "2026-03-02T18:02:47.725000Z",
  "file_hash": "f0fe9efafa7c4229fbe90d5014ded4a588f9295532fb4e230ddfd8dced2c41d1",
  "private": false,
  "record": {
    "abstract": "Polarization state of biphoton light generated via collinear\nfrequency-degenerate spontaneous parametric down-conversion is considered. A\nbiphoton is described by a three-component polarization vector, its arbitrary\ntransformations relating to the SU(3) group. A subset of such transformations,\navailable with retardation plates, is realized experimentally. In particular,\ntwo independent orthogonally polarized beams of type-I biphotons are\ntransformed into a beam of type-II biphotons. Polarized biphotons are suggested\nas ternary analogs of two-state quantum systems (qubits).",
    "arxiv_id": "quant-ph/9907099",
    "authors": [
      "A. V. Burlakov",
      "M. V. Chekhova",
      "O. A. Karabutova",
      "D. N. Klyshko",
      "S. P. Kulik"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.60.R4209",
    "title": "Polarization state of a biphoton: quantum ternary logic",
    "url": "https://arxiv.org/abs/quant-ph/9907099"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7cf24e57-c757-4c6e-abeb-6356906984e4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}