{
  "annotation_id": "03922e03-2325-4732-bae1-88d3aad81f57",
  "date_created": "2026-03-02T18:01:38.678000Z",
  "date_modified": "2026-03-02T18:01:38.678000Z",
  "file_hash": "2dd8da867e29a5401b9d77df6a4895abed53d40460929eeb99f7f7ff30f94d5b",
  "private": false,
  "record": {
    "abstract": "Quantum teleportation of a continuous-variable state is studied for the\nquantum channel of a two-mode squeezed vacuum influenced by a thermal\nenvironment. Each mode of the squeezed vacuum is assumed to undergo the same\nthermal influence. It is found that when the mixed two-mode squeezed vacuum for\nthe quantum channel is separable, any nonclassical features, which may be\nimposed in an original unknown state, cannot be transferred to a receiving\nstation. A two-mode Gaussian state, one of which is a mixed two-mode squeezed\nvacuum, is separable if and only if a positive well-defined $P$ function can be\nassigned to it. The fidelity of teleportation is considered in terms of the\nnoise factor given by the imperfect channel. It is found that quantum\nteleportation may give more noise than direct transmission of a field under the\nthermal environment, which is due to the fragile nature of quantum entanglement\nof the quantum channel.",
    "arxiv_id": "quant-ph/0003078",
    "authors": [
      "Jinhyoung Lee",
      "M. S. Kim",
      "Hyunseok Jeong"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.62.032305",
    "journal_ref": "Phys. Rev. A 62, 032305 (2000)",
    "title": "Transfer of nonclassical features in quantum teleportation via a mixed   quantum channel",
    "url": "https://arxiv.org/abs/quant-ph/0003078"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "601f0c45-2889-432a-a4c7-dc421a01470f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}