{
  "annotation_id": "32c60cbc-5367-495d-95bb-17bb636f8e07",
  "date_created": "2026-03-02T18:01:59.476000Z",
  "date_modified": "2026-03-02T18:01:59.476000Z",
  "file_hash": "fea529e002aa60408f7ba483277eaefba66c709cd53a8f76fa4f1fb927304e92",
  "private": false,
  "record": {
    "abstract": "We put forward the concept of quantum spiral bandwidth of the spatial mode\nfunction of the two-photon entangled state in spontaneous parametric\ndownconversion. We obtain the bandwidth using the eigenstates of the orbital\nangular momentum of the biphoton states, and reveal its dependence with the\nlength of the down converting crystal and waist of the pump beam. The\nconnection between the quantum spiral bandwidth and the entropy of entanglement\nof the quantum state is discussed.",
    "arxiv_id": "quant-ph/0306105",
    "authors": [
      "J. P. Torres",
      "A. Alexandrescu",
      "L. Torner"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.68.050301",
    "title": "Quantum spiral bandwidth of entangled two-photon states",
    "url": "https://arxiv.org/abs/quant-ph/0306105"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "23ecffb6-799a-4f8d-9929-a8730553187c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}