{
  "annotation_id": "ed0e3deb-980a-4fc5-b75c-e96eb54746ae",
  "date_created": "2026-03-02T18:01:38.772000Z",
  "date_modified": "2026-03-02T18:01:38.772000Z",
  "file_hash": "7e7aaa9553e4661b761dddbf7149ec380c8d1d2892bbc60d27a513624087f148",
  "private": false,
  "record": {
    "abstract": "We report a novel Bell state preparation experiment. High-purity Bell states\nare prepared by using femtosecond pulse pumped \\emph{nondegenerate} collinear\nspontaneous parametric down-conversion. The use of femtosecond pump pulse {\\em\ndoes not} result in reduction of quantum interference visibility in our scheme\nin which post-selection of amplitudes and other traditional mechanisms, such\nas, using thin nonlinear crystals or narrow-band spectral filters are not used.\nAnother distinct feature of this scheme is that the pump, the signal, and the\nidler wavelengths are all distinguishable, which is very useful for quantum\ncommunications.",
    "arxiv_id": "quant-ph/0007067",
    "authors": [
      "Yoon-Ho Kim",
      "Sergei P. Kulik",
      "Yanhua Shih"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.63.060301",
    "journal_ref": "PRA 63, 060301(R), (2001)",
    "title": "Bell State Preparation using Pulsed Non-Degenerate Two-Photon   Entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0007067"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b4314d08-59c6-4221-952b-cee22e3af14b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}