{
  "annotation_id": "eb37a16a-76a2-4de5-a32e-cce61f875176",
  "date_created": "2026-03-02T18:02:30.618000Z",
  "date_modified": "2026-03-02T18:02:30.618000Z",
  "file_hash": "60c758fb658b861c5b450e7b4ad21900c7abb132084e7ca5bc017343fb2ce24c",
  "private": false,
  "record": {
    "abstract": "A perfect quantum state transfer(QST) has been shown in an engineered spin\nchain with \"always-on interaction\". Here, we consider a more realistic problem\nfor such a protocol, the quantum decoherence induced by a spatially distributed\nenvironment, which is universally modeled as a bath of harmonic oscillators. By\nmaking use of the irreducible tensor method in angular momentum theory, we\ninvestigate the effect of decoherence on the efficiency of QST for both cases\nat zero and finite temperatures. We not only show the generic exponential decay\nof QST efficiency as the number of sites increase, but also find some\ncounterintuitive effect, the QST can be enhanced as temperature increase.",
    "arxiv_id": "quant-ph/0608135",
    "authors": [
      "Lan Zhou",
      "Jing Lu",
      "Tao Shi",
      "C. P. Sun"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Decoherence problem in quantum state transfer via an engineered spin   chain",
    "url": "https://arxiv.org/abs/quant-ph/0608135"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "41740a79-b016-45e6-b949-59ef9bf41b3f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}