{
  "annotation_id": "81f4256d-7d32-49e7-b545-52d352e1ba1b",
  "date_created": "2026-03-02T18:02:31.240000Z",
  "date_modified": "2026-03-02T18:02:31.240000Z",
  "file_hash": "93ede7efbaf642d325f4aa24b5cfcff5c8f80c880f01d6fbb64767132eea5acf",
  "private": false,
  "record": {
    "abstract": "We study the transfer of quantum information through a Heisenberg spin-1\nchain prepared in its ground state. We measure the efficiency of such a quantum\nchannel {\\em via} the fidelity of retrieving an arbitrarily prepared state and\n{\\em via} the transfer of quantum entanglement. The Heisenberg spin-1 chain has\na very rich quantum phase diagram. We show that the phase boundaries are\nreflected in sharp variations of the transfer efficiency. In the vicinity of\nthe border between the dimer and the ferromagnetic phase (in the conjectured\nspin-nematic region), we find strong indications for a qualitative change of\nthe excitation spectrum. Moreover, we identify two regions of the phase diagram\nwhich give rise to particularly high transfer efficiency; the channel might be\nnon-classical even for chains of arbitrary length, in contrast to spin-1/2\nchains.",
    "arxiv_id": "quant-ph/0610210",
    "authors": [
      "O. Romero-Isart",
      "K. Eckert",
      "A. Sanpera"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.other"
    ],
    "doi": "10.1103/PhysRevA.75.050303",
    "journal_ref": "Phys. Rev. A 75, 050303(R) (2007)",
    "title": "Quantum State Transfer in Spin-1 Chains",
    "url": "https://arxiv.org/abs/quant-ph/0610210"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "123a2cff-8a01-4658-b745-9f48a2e0080d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}