{
  "annotation_id": "899e8bee-4c05-4f3c-9bed-348130fc6182",
  "date_created": "2026-03-02T18:02:10.435000Z",
  "date_modified": "2026-03-02T18:02:10.435000Z",
  "file_hash": "75d460af27906d1f2b602674ef7351246d5eac8ebebf5dae6bdd1db490a23042",
  "private": false,
  "record": {
    "abstract": "Non-linear photonic crystals can be used to provide phase-matching for\nfrequency conversion in optically isotropic materials. The phase-matching\nmechanism proposed here is a combination of form birefringence and phase\nvelocity dispersion in a periodic structure. Since the phase-matching relies on\nthe geometry of the photonic crystal, it becomes possible to use highly\nnon-linear materials. This is illustrated considering a one-dimensional\nperiodic Al$_{0.4}$Ga$_{0.6}$As / air structure for the generation of 1.5\n$\\mu$m light. We show that phase-matching conditions used in schemes to create\nentangled photon pairs can be achieved in photonic crystals.",
    "arxiv_id": "quant-ph/0409171",
    "authors": [
      "Michiel J. A. de Dood",
      "William T. M. Irvine",
      "Dirk Bouwmeester"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.93.040504",
    "journal_ref": "Physical Review Letters, 93, 040504 (2004)",
    "title": "Non-linear photonic crystals as a source of entangled photons",
    "url": "https://arxiv.org/abs/quant-ph/0409171"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3902cedb-42bd-4143-8910-c159c96bdfbf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}