{
  "annotation_id": "af21c0d2-1ccd-45eb-aa00-3d9df6553378",
  "date_created": "2026-03-02T18:02:10.238000Z",
  "date_modified": "2026-03-02T18:02:10.238000Z",
  "file_hash": "fbc95a814c9e7eb579e807cbb0c125798bb7a6ea15b681e5b5be0a008c5ec67f",
  "private": false,
  "record": {
    "abstract": "We investigate quantum communication between the sites of a spin-ring with\ntwisted boundary conditions. Such boundary conditions can be achieved by a flux\nthrough the ring. We find that a non-zero twist can improve communication\nthrough finite odd numbered rings and enable high fidelity multi-party quantum\ncommunication through spin rings (working near perfectly for rings of 5 and 7\nspins). We show that in certain cases, the twist results in the complete\nblockage of quantum information flow to a certain site of the ring. This effect\ncan be exploited to interface and entangle a flux qubit and a spin qubit\nwithout embedding the latter in a magnetic field.",
    "arxiv_id": "quant-ph/0409134",
    "authors": [
      "S. Bose",
      "B. -Q. Jin",
      "V. E. Korepin"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.022345",
    "journal_ref": "Phys. Rev. A 72, 022345 (2005)",
    "title": "Quantum Communication Through a Spin-Ring with Twisted Boundary   Conditions",
    "url": "https://arxiv.org/abs/quant-ph/0409134"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5d44e880-1344-40ca-8ca5-9dc4724edffa",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}