{
  "annotation_id": "9fbeffdd-1712-4570-a694-2d9836c45b34",
  "date_created": "2026-03-02T18:02:48.306000Z",
  "date_modified": "2026-03-02T18:02:48.306000Z",
  "file_hash": "c991d5311a468695e538abae112be9784c8e89d708c0473b68dec2450d80555f",
  "private": false,
  "record": {
    "abstract": "In the theory of quantum transmission of information the concept of fidelity\nplays a fundamental role. An important class of channels, which can be\nexperimentally realized in quantum optics, is that of Gaussian quantum\nchannels. In this work we present a general formula for fidelity in the case of\ntwo arbitrary Gaussian states. From this formula one can get a previous result\n(H. Scutaru, J. Phys. A: Mat. Gen {\\bf 31}, 3659 (1998)), for the case of a\nsingle mode; or, one can apply it to obtain a closed compact expression for\nmultimode thermal states.",
    "arxiv_id": "quant-ph/9907068",
    "authors": [
      "Gh. -S. Paraoanu",
      "H. Scutaru"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.61.022306",
    "title": "Fidelity for Multimode Thermal Squeezed States",
    "url": "https://arxiv.org/abs/quant-ph/9907068"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4f059dd3-cc81-4559-bd19-22a30c88754a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}