{
  "annotation_id": "a5ffa95c-fbf9-4d3d-a02c-3ba6a4a628c7",
  "date_created": "2026-03-02T18:02:09.449000Z",
  "date_modified": "2026-03-02T18:02:09.449000Z",
  "file_hash": "572d8b04b1222b2a6b11493c72b16dd9eb6fcc6d950021b1592fa4231ce893fe",
  "private": false,
  "record": {
    "abstract": "We study the collective excitation of a macroscopic ensemble of polarized\nnuclei fixed in a quantum dot. Under the approximately homogeneous condition\nthat we explicitly present in this paper, this many-particle system behaves as\na single mode boson interacting with the spin of a single conduction band\nelectron confined in this quantum dot. Within this effective spin-boson system,\nthe quantum information carried by the electronic spin can be coherently\ntransferred into the collective bosonic mode of excitation in the ensemble of\nnuclei. In this sense, the collective bosonic excitation can serve as a stable\nquantum memory to store the quantum information of spin state of electron.",
    "arxiv_id": "quant-ph/0409185",
    "authors": [
      "Z. Song",
      "P. Zhang",
      "T. Shi",
      "C. P. Sun"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.mes-hall"
    ],
    "doi": "10.1103/PhysRevB.71.205314",
    "journal_ref": "Phys. Rev. B 71, 205314 (2005)",
    "title": "Effective boson-spin model for nuclei ensemble based universal quantum   memory",
    "url": "https://arxiv.org/abs/quant-ph/0409185"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "abcf7f06-dde2-41d4-aed4-95956d72a201",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}