{
  "annotation_id": "4dc3e019-6dc7-4b45-9827-d7e19ce593e5",
  "date_created": "2026-03-02T18:02:03.545000Z",
  "date_modified": "2026-03-02T18:02:03.545000Z",
  "file_hash": "b678c058f07dbeefff3ddf288a1589e6672a0a9e5a49bc2ffe6dc3cd0d932475",
  "private": false,
  "record": {
    "abstract": "Single spin measurement represents a major challenge for spin-based quantum\ncomputation. In this article we propose a new method for measuring the spin of\na single electron confined in a quantum dot (QD). Our strategy is based on\nentangling (using unitary gates) the spin and orbital degrees of freedom. An\n{\\em orbital qubit}, defined by a second, empty QD, is used as an ancilla and\nis prepared in a known initial state. Measuring the orbital qubit will reveal\nthe state of the (unknown) initial spin qubit, hence reducing the problem to\nthe easier task of single charge measurement. Since spin-charge conversion is\ndone with unit probability, single-shot measurement of an electronic spin can\nbe, in principle, achieved. We evaluate the robustness of our method against\nvarious sources of error and discuss briefly possible implementations.",
    "arxiv_id": "quant-ph/0310047",
    "authors": [
      "Radu Ionicioiu",
      "A. E. Popescu"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.mes-hall"
    ],
    "doi": "10.1088/1367-2630/7/1/120",
    "journal_ref": "New J. Phys. 7, 120 (2005)",
    "title": "Single spin measurement using spin-orbital entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0310047"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c8c2e61b-5a19-44a4-820f-605e1f749e7f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}