{
  "annotation_id": "efd98758-7469-439f-98cc-a8045b6aef05",
  "date_created": "2026-03-02T18:02:30.341000Z",
  "date_modified": "2026-03-02T18:02:30.341000Z",
  "file_hash": "1be18b30df88810f01fc181890ed2ff18babb21d2a6b38b24a76df90dbecc9d5",
  "private": false,
  "record": {
    "abstract": "We demonstrate a Fock-state filter which is capable of preferentially\nblocking single photons over photon pairs. The large conditional nonlinearities\nare based on higher-order quantum interference, using linear optics, an ancilla\nphoton, and measurement. We demonstrate that the filter acts coherently by\nusing it to convert unentangled photon pairs to a path-entangled state. We\nquantify the degree of entanglement by transforming the path information to\npolarisation information, applying quantum state tomography we measure a tangle\nof T=(20+/-9)%.",
    "arxiv_id": "quant-ph/0608052",
    "authors": [
      "K. J. Resch",
      "J. L. O\u0027Brien",
      "T. J. Weinhold",
      "K. Sanaka",
      "A. G. White"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.98.203602",
    "journal_ref": "Physical Review Letters 98, 203602 (2007)",
    "title": "Entanglement generation by Fock-state filtration",
    "url": "https://arxiv.org/abs/quant-ph/0608052"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f5e42e22-bfc7-4c6e-b9a6-b6b1a2172b1a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}