{
  "annotation_id": "10f3523d-fe29-4c77-9a9a-34eb77813590",
  "date_created": "2026-03-02T18:01:42.181000Z",
  "date_modified": "2026-03-02T18:01:42.181000Z",
  "file_hash": "c0c88606fc63cf6cd523ae1b63342e7e7d9627f8ae0b73c797e1c71c78decca3",
  "private": false,
  "record": {
    "abstract": "Quantum communication schemes widely use dielectric four-port devices as\nbasic elements for constructing optical quantum channels. Since for causality\nreasons the permittivity is necessarily a complex function of frequency,\ndielectrics are typical examples of noisy quantum channels in which quantum\ncoherence will not be preserved. Basing on quantization of the phenomenological\nelectrodynamics, we construct the transformation relating the output quantum\nstate to the input quantum state without placing frequency restrictions.\nKnowledge of the full transformed quantum state enables us to compute the\nentanglement contained in the output quantum state. We apply the formalism to\nsome typical examples in quantum communication.",
    "arxiv_id": "quant-ph/0010053",
    "authors": [
      "S. Scheel",
      "L. Knoll",
      "T. Opatrny",
      "D. -G. Welsch"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Entanglement transformation at dielectric four-port devices",
    "url": "https://arxiv.org/abs/quant-ph/0010053"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "df7b3d82-1457-45b8-98c0-2e5375562869",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}