{
  "annotation_id": "17ea4dd4-cb53-4611-8ee8-038fe8cef60a",
  "date_created": "2026-03-02T18:01:39.220000Z",
  "date_modified": "2026-03-02T18:01:39.220000Z",
  "file_hash": "fbf660e847e9ef30f3bfb5b017dc268772de36ab18e8e6f72006ef1d4c5464f0",
  "private": false,
  "record": {
    "abstract": "The recently proposed idea to generate entanglement between photon states via\nexchange interactions in an ensemble of atoms (J.D. Franson and T.B. Pitman,\nPhys. Rev. A 60, 917 (1999) and J.D. Franson et al., (quant-ph/9912121)) is\ndiscussed using an S-matix approach. It is shown that if the nonlinear response\nof the atoms is negligible and no additional atom-atom interactions are\npresent, exchange interactions cannot produce entanglement between photons\nstates in a process that returns the atoms to their initial state. Entanglement\ngeneration requires the presence of a nonlinear atomic response or atom-atom\ninteractions.",
    "arxiv_id": "quant-ph/0006042",
    "authors": [
      "M. Fleischhauer"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "On quantum logic operations based on photon-exchange interactions in an   ensemble of non-interacting atoms",
    "url": "https://arxiv.org/abs/quant-ph/0006042"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f2d8d4e3-afdf-4e4c-b8af-14775d377e83",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}