{
  "annotation_id": "2dcb6a9f-495d-4894-9992-42d44b4b6b07",
  "date_created": "2026-03-02T18:01:42.685000Z",
  "date_modified": "2026-03-02T18:01:42.685000Z",
  "file_hash": "4fee5d657f150e9df87663305b495eb65704e794a847a043f485484dbbd21b7c",
  "private": false,
  "record": {
    "abstract": "An efficient and intuitive framework for universal quantum computation is\npresented that uses pairs of spin-1/2 particles to form logical qubits and a\nsingle physical interaction, Heisenberg exchange, to produce all gate\noperations. Only two Heisenberg gate operations are required to produce a\ncontrolled pi-phase shift, compared to 19 for exchange-only proposals employing\nthree spins. Evolved from well-studied decoherence-free subspaces, this\narchitecture inherits immunity from collective decoherence mechanisms. The\nsimplicity and adaptability of this approach should make it attractive for\nspin-based quantum computing architectures.",
    "arxiv_id": "quant-ph/0101057",
    "authors": [
      "Jeremy Levy"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.89.147902",
    "title": "Universal quantum computation with spin-1/2 pairs and Heisenberg   exchange",
    "url": "https://arxiv.org/abs/quant-ph/0101057"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3d0ecb44-243f-4a3b-82d5-601e7e9fdced",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}