{
  "annotation_id": "d0dd2f32-68e0-4ae8-b5d0-321c3eea1d5e",
  "date_created": "2026-03-02T18:02:03.308000Z",
  "date_modified": "2026-03-02T18:02:03.308000Z",
  "file_hash": "6223d114dc4943cc841d8059cf9f981b26c556d9639fa1c0c30d14bc9baf2b61",
  "private": false,
  "record": {
    "abstract": "It is known that a quantum computer operating on electron-spin qubits with\nsingle-electron Hamiltonians and assisted by single-spin measurements can be\nsimulated efficiently on a classical computer. We show that the exponential\nspeed-up of quantum algorithms is restored if single-charge measurements are\nadded. These enable the construction of a CNOT (controlled NOT) gate for free\nfermions, using only beam splitters and spin rotations. The gate is nearly\ndeterministic if the charge detector counts the number of electrons in a mode,\nand fully deterministic if it only measures the parity of that number.",
    "arxiv_id": "quant-ph/0401066",
    "authors": [
      "C. W. J. Beenakker",
      "D. P. DiVincenzo",
      "C. Emary",
      "M. Kindermann"
    ],
    "categories": [
      "quant-ph",
      "cond-mat"
    ],
    "doi": "10.1103/PhysRevLett.93.020501",
    "journal_ref": "Phys.Rev.Lett. 93, 020501 (2004)",
    "title": "Charge detection enables free-electron quantum computation",
    "url": "https://arxiv.org/abs/quant-ph/0401066"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "20eebb77-41f3-4e4b-9fd0-5e37fe245cbb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}