{
  "annotation_id": "3f4b0108-55bd-416c-a21b-139b79af617e",
  "date_created": "2026-03-02T18:02:27.515000Z",
  "date_modified": "2026-03-02T18:02:27.515000Z",
  "file_hash": "9e03c2129e86e0c3e0835a4a319c8e22bee16d2cf743c981da1a7e9df18713bb",
  "private": false,
  "record": {
    "abstract": "We study GHZ-type and W-type three-mode entangled coherent states. Both the\ntypes of entangled coherent states violate Mermin\u0027s version of the Bell\ninequality with threshold photon detection (i.e., without photon counting).\nSuch an experiment can be performed using linear optics elements and threshold\ndetectors with significant Bell violations for GHZ-type entangled coherent\nstates. However, to demonstrate Bell-type inequality violations for W-type\nentangled coherent states, additional nonlinear interactions are needed. We\nalso propose an optical scheme to generate W-type entangled coherent states in\nfree-traveling optical fields. The required resources for the generation are a\nsingle-photon source, a coherent state source, beam splitters, phase shifters,\nphotodetectors, and Kerr nonlinearities. Our scheme does not necessarily\nrequire strong Kerr nonlinear interactions, i.e., weak nonlinearities can be\nused for the generation of the W-type entangled coherent states. Furthermore,\nit is also robust against inefficiencies of the single-photon source and the\nphoton detectors.",
    "arxiv_id": "quant-ph/0606109",
    "authors": [
      "Hyunseok Jeong",
      "Nguyen Ba An"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.022104",
    "journal_ref": "Phys. Rev. A 74, 022104 (2006)",
    "title": "GHZ-type and W-type entangled coherent states: generation and Bell-type   inequality tests without photon counting",
    "url": "https://arxiv.org/abs/quant-ph/0606109"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bbb3c542-13e9-4aa4-8f72-bf2c1a103b75",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}