{
  "annotation_id": "d355a7fc-414f-4dd1-aa4c-01eead67b380",
  "date_created": "2026-03-02T18:01:42.659000Z",
  "date_modified": "2026-03-02T18:01:42.659000Z",
  "file_hash": "4a5078bdb835b7e35f322177c98d28e021596a6ce1462b6b8c21d198c06fce48",
  "private": false,
  "record": {
    "abstract": "An entangled two-mode coherent state is studied within the framework of\n$2\\times 2$ dimensional Hilbert space. An entanglement concentration scheme\nbased on joint Bell-state measurements is worked out. When the entangled\ncoherent state is embedded in vacuum environment, its entanglement is degraded\nbut not totally lost. It is found that the larger the initial coherent\namplitude, the faster entanglement decreases. We investigate a scheme to\nteleport a coherent superposition state while considering a mixed quantum\nchannel. We find that the decohered entangled coherent state may be useless for\nquantum teleportation as it gives the optimal fidelity of teleportation less\nthan the classical limit 2/3.",
    "arxiv_id": "quant-ph/0104090",
    "authors": [
      "H. Jeong",
      "M. S. Kim",
      "Jinhyoung Lee"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.64.052308",
    "journal_ref": "Phys. Rev. A 64, 052308 (2001)",
    "title": "Quantum information processing for a coherent superposition state via a   mixed entangled coherent channel",
    "url": "https://arxiv.org/abs/quant-ph/0104090"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f0ce081d-8ca4-4033-bca5-50b7833ef1db",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}