{
  "annotation_id": "72bbfe8b-72e9-42dc-bda4-2a27621d198a",
  "date_created": "2026-03-02T18:02:03.064000Z",
  "date_modified": "2026-03-02T18:02:03.064000Z",
  "file_hash": "ddb84f018212a70e4ffb9fa73bdc16f32f703b45cc5ea7acdcee94be686b3db9",
  "private": false,
  "record": {
    "abstract": "It has been recently suggested that the dynamics of a quantum spin system may\nprovide a natural mechanism for transporting quantum information. We show that\none dimensional rings of qubits with fixed (time-independent) interactions,\nconstant around the ring, allow high fidelity communication of quantum states.\nWe show that the problem of maximising the fidelity of the quantum\ncommunication is related to a classical problem in fourier wave analysis. By\nmaking use of this observation we find that if both communicating parties have\naccess to limited numbers of qubits in the ring (a fraction that vanishes in\nthe limit of large rings) it is possible to make the communication arbitrarily\ngood.",
    "arxiv_id": "quant-ph/0312141",
    "authors": [
      "Tobias J. Osborne",
      "Noah Linden"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.69.052315",
    "journal_ref": "Phys. Rev. A 69, 052315 (2004)",
    "title": "The Propagation of Quantum Information Through a Spin System",
    "url": "https://arxiv.org/abs/quant-ph/0312141"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a49e2441-6f4b-4b18-b27b-2bf11148a468",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}