{
  "annotation_id": "fdbe56ba-1d6b-4efb-a03e-0d534bf798df",
  "date_created": "2026-03-02T18:02:02.726000Z",
  "date_modified": "2026-03-02T18:02:02.726000Z",
  "file_hash": "4bb9206344d7c54fb5a56e26f1d86afdcd7144d8e68266104996961de8c5805b",
  "private": false,
  "record": {
    "abstract": "In the framework of the paraxial and of the slowly varying envelope\napproximations, with reference to a normally dispersive medium or to vacuum,\nthe electromagnetic field is given as a continuous quantum superposition of\nnon-dispersive and non-diffracting wave-packets (namely X-waves). Entangled\nstates as pairs of elementary excitations traveling at (approximately) the same\nvelocity are found in optical parametric amplification.",
    "arxiv_id": "quant-ph/0309069",
    "authors": [
      "Claudio Conti"
    ],
    "categories": [
      "quant-ph",
      "physics.optics"
    ],
    "title": "Generation of entangled 3D localized quantum wave-packets via optical   parametric amplification",
    "url": "https://arxiv.org/abs/quant-ph/0309069"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b1d1bf37-9fba-4461-95af-03a000b6bd43",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}