{
  "annotation_id": "affb1f1c-6b08-4508-a623-c3eb80b8e4e8",
  "date_created": "2026-03-02T18:02:17.090000Z",
  "date_modified": "2026-03-02T18:02:17.090000Z",
  "file_hash": "c949d96e1408b60ee7700fe414e32f5fe9f5c3f61a5c79eca983c4057a74efc6",
  "private": false,
  "record": {
    "abstract": "In this paper we consider the generation of a three-qubit GHZ-like thermal\nstate by applying the entanglement swapping scheme of Zukowski {\\it et al.}\n[Ann. N. Y. Acad. Sci. {\\bf 755}, 91 (1995)] to three pairs of two-qubit\nHeisenberg XY chains. The quality of the resulting three-qubit entanglement is\nstudied by analyzing the teleportation fidelity, when it is used as a resource\nin the teleportation protocol of Karlsson {\\it et al.}[Phys. Rev. A {\\bf 58},\n4394 (1998)]. We show that even though thermal noise in the original two-qubit\nstates is amplified by the entanglement swapping process, we are still able to\nachieve nonclassical fidelities for the anisotropic Heisenberg XY chains at\nfinitely higher and higher temperatures by adjusting the strengths of an\nexternal magnetic field. This has a positive implication on the solid-state\nrealization of a quantum computer.",
    "arxiv_id": "quant-ph/0506161",
    "authors": [
      "Zi Chong Kao",
      "Jezreel Ng",
      "Ye Yeo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.062302",
    "title": "Three-qubit Thermal Entanglement via Entanglement Swapping on Two-qubit   Heisenberg XY chains",
    "url": "https://arxiv.org/abs/quant-ph/0506161"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "07b17ad4-d614-4bf0-92cf-0aa014e6e41a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}