{
  "annotation_id": "207dc9c4-0229-4532-badf-6f48136273c9",
  "date_created": "2026-03-02T18:01:49.491000Z",
  "date_modified": "2026-03-02T18:01:49.491000Z",
  "file_hash": "7b1febf419124690e4591323c3fa7b4ca8edaa80b6eb60b5fb188b24f5a235cf",
  "private": false,
  "record": {
    "abstract": "In [J. C. Howell and J. A. Yeazell, Phys. Rev. A 62, 012102 (2000)], a\nproposal is made to generate entangled macroscopically distinguishable states\nof two spatially separated traveling optical modes. We model the decoherence\ndue to light scattering during the propagation along an optical transmission\nline and propose a setup allowing an entanglement purification from a number of\npreparations which are partially decohered due to transmission. A purification\nis achieved even without any manual intervention. We consider a nondemolition\nconfiguration to measure the purity of the state as contrast of interference\nfringes in a double-slit setup. Regarding the entangled coherent states as a\nstate of a bipartite quantum system, a close relationship between purity and\nentanglement of formation can be obtained. In this way, the contrast of\ninterference fringes provides a direct means to measure entanglement.",
    "arxiv_id": "quant-ph/0203144",
    "authors": [
      "J. Clausen",
      "L. Knoell",
      "D. -G. Welsch"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.062303",
    "journal_ref": "Phys. Rev. A 66, 062303 (2002)",
    "title": "Purification and detection of entangled coherent states",
    "url": "https://arxiv.org/abs/quant-ph/0203144"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "16f51eab-c1d6-4bac-9082-7c4189d45ba6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}