{
  "annotation_id": "71c82d19-03f5-4504-9a87-80373cbdd1a6",
  "date_created": "2026-03-02T18:02:09.192000Z",
  "date_modified": "2026-03-02T18:02:09.192000Z",
  "file_hash": "9f360e2e79fde50f60f154e5afaad8c207438de33c957b8a9766ba603ee4e4a2",
  "private": false,
  "record": {
    "abstract": "We suggest a protocol for perfect quantum communication through spin chain\nchannels. By combining a dual-rail encoding with measurements only at the\nreceiving end, we can get conclusively perfect state transfer, whose\nprobability of success can be made arbitrarily close to unity. As an example of\nsuch an amplitude delaying channel, we show how two parallel Heisenberg spin\nchains can be used as quantum wires. Perfect state transfer with a probability\nof failure lower than P in a Heisenberg chain of N spin-1/2 particles can be\nachieved in a timescale of the order of N^1.7|ln(P)|. We demonstrate that our\nscheme is more robust to decoherence and non-optimal timing than any scheme\nusing single spin chains.",
    "arxiv_id": "quant-ph/0406112",
    "authors": [
      "Daniel Burgarth",
      "Sougato Bose"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.71.052315",
    "journal_ref": "Physical Review A 71, 052315 (2005)",
    "title": "Conclusive and arbitrarily perfect quantum state transfer using parallel   spin chain channels",
    "url": "https://arxiv.org/abs/quant-ph/0406112"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3b64f790-729f-4e21-8fcb-493efc0da3a4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}