{
  "annotation_id": "8bb5a4f9-7053-46ac-9b74-8e1d0ad98479",
  "date_created": "2026-03-02T18:02:30.799000Z",
  "date_modified": "2026-03-02T18:02:30.799000Z",
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  "private": false,
  "record": {
    "abstract": "We demonstrate production of quantum correlated and entangled beams by second\nharmonic generation in a nonlinear resonator with two output ports. The output\nbeams at wavelength 428.5 nm exhibit 0.9 dB of nonclassical intensity\ncorrelations and 0.3 dB of entanglement.",
    "arxiv_id": "quant-ph/0609025",
    "authors": [
      "O. -K. Lim",
      "B. Boland",
      "M. Saffman"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1209/0295-5075/78/40004",
    "journal_ref": "Europhys. Lett. 78, 40004 (2007)",
    "title": "Observation of twin beam correlations and quadrature entanglement by   frequency doubling in a two-port resonator",
    "url": "https://arxiv.org/abs/quant-ph/0609025"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4fbba7ae-1828-41ff-853c-8170a012c11d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}