{
  "annotation_id": "82576069-9430-4e1b-b5de-b0934d4945ac",
  "date_created": "2026-03-02T18:02:06.341000Z",
  "date_modified": "2026-03-02T18:02:06.341000Z",
  "file_hash": "830644215fd6d7a588e45018846e0d5543e48beff3f345ef6cf773eeaf014119",
  "private": false,
  "record": {
    "abstract": "We show theoretically that concurrent interactions in a second-order\nnonlinear medium placed inside an optical resonator can generate multipartite\nentanglement between the resonator modes. We show that there is a mathematical\nconnexion between this system and van Loock and Braunstein\u0027s proposal for\nentangling N continuous quantum optical variables by interfering the outputs of\nN degenerate optical parametric amplifiers (OPA) at a N-port beam splitter. Our\nconfiguration, however, requires only one nondegenerate OPA and no\ninterferometer. In a preliminary experimental study, we observe the concurrence\nof the appropriate interactions in periodically poled RbTiOAsO4.",
    "arxiv_id": "quant-ph/0404049",
    "authors": [
      "Olivier Pfister",
      "Sheng Feng",
      "Gregory Jennings",
      "Raphael Pooser",
      "Daruo Xie"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.70.020302",
    "journal_ref": "Phys. Rev. A 70, 020302(R) (2004)",
    "title": "Multipartite continuous-variable entanglement from concurrent   nonlinearities",
    "url": "https://arxiv.org/abs/quant-ph/0404049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9ec9d85d-2dda-4636-b010-7b7d2490fce2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}