{
  "annotation_id": "78081ac8-d88c-40be-b82b-d46832c0459e",
  "date_created": "2026-03-02T18:02:05.752000Z",
  "date_modified": "2026-03-02T18:02:05.752000Z",
  "file_hash": "87a9bac18d7a3044178a4b6824f469cd2e3a631ac544458898fede03c62ffcb0",
  "private": false,
  "record": {
    "abstract": "We propose a novel setup to investigate the quantum non-locality of orbital\nangular momentum states living in a high-dimensional Hilbert space. We\nincorporate non-integer spiral phase plates in spatial analyzers, enabling us\nto use only two detectors. The resulting setup is somewhat reminiscent of that\nused to measure polarization entanglement. However, the two-photon states that\nare produced, are not confined to a 2X2-dimensional Hilbert space, and the\nsetup allows the probing of correlations in a high-dimensional space. For the\nspecial case of half-integer spiral phase plates, we predict a violation of the\nClauser-Horne-Shimony-Holt version of the Bell inequality (S\u003c=2), that is even\nstronger than achievable for two qubits (S=2*(2^1/2)), namely S=16/5",
    "arxiv_id": "quant-ph/0401148",
    "authors": [
      "S. S. R. Oemrawsingh",
      "A. Aiello",
      "E. R. Eliel",
      "G. Nienhuis",
      "J. P. Woerdman"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Violation of local realism in a high-dimensional two-photon setup with   non-integer spiral phase plates",
    "url": "https://arxiv.org/abs/quant-ph/0401148"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9df149a1-940a-4ee8-838f-300a824e8d96",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}