{
  "annotation_id": "95036236-81d1-403e-903a-5a1a57f1ae9a",
  "date_created": "2026-03-02T18:01:56.332000Z",
  "date_modified": "2026-03-02T18:01:56.332000Z",
  "file_hash": "5807b8c960e7b6df836128aad3eb5c79178db774992108641cad4594725cb283",
  "private": false,
  "record": {
    "abstract": "We implement experimentally a deterministic method to prepare and measure so\ncalled single-photon two-qubit entangled states or single-photon Bell-states,\nin which the polarization and the spatial modes of a single-photon each\nrepresent a quantum bit. All four single-photon Bell-states can be easily\nprepared and measured deterministically using linear optical elements alone. We\nalso discuss how this method can be used for recently proposed single-photon\ntwo-qubit quantum cryptography protocol.",
    "arxiv_id": "quant-ph/0303125",
    "authors": [
      "Yoon-Ho Kim"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.67.040301",
    "journal_ref": "Phys. Rev. A 67, 040301(R) (2003)",
    "title": "Single-photon two-qubit \"entangled\u0027\u0027 states: preparation and measurement",
    "url": "https://arxiv.org/abs/quant-ph/0303125"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "35f5131d-f967-4b98-ba83-f3990ae1dca7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}