{
  "annotation_id": "7483a715-3801-4074-b68d-65b848d722c9",
  "date_created": "2026-03-02T18:02:09.062000Z",
  "date_modified": "2026-03-02T18:02:09.062000Z",
  "file_hash": "5c32e34e9520809f773d23f0abc0e08435bc56e489612f8fd7dece9f1e08f1a4",
  "private": false,
  "record": {
    "abstract": "In a quantum ring connected with two external leads the spin properties of an\nincoming electron are modified by the spin-orbit interaction resulting in a\ntransformation of the qubit state carried by the spin. The ring acts as a one\nqubit spintronic quantum gate whose properties can be varied by tuning the\nRashba parameter of the spin-orbit interaction, by changing the relative\nposition of the junctions, as well as by the size of the ring. We show that a\nlarge class of unitary transformations can be attained with already one ring --\nor a few rings in series -- including the important cases of the Z, X, and\nHadamard gates. By choosing appropriate parameters the spin transformations can\nbe made unitary, which corresponds to lossless gates.",
    "arxiv_id": "quant-ph/0406091",
    "authors": [
      "Peter Foldi",
      "Balazs Molnar",
      "Mihaly G. Benedict",
      "F. M. Peeters"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.mes-hall"
    ],
    "doi": "10.1103/PhysRevB.71.033309",
    "journal_ref": "Phys. Rev. B 71 (3), 033309 (2005).",
    "title": "Spintronic single qubit gate based on a quantum ring with spin-orbit   interaction",
    "url": "https://arxiv.org/abs/quant-ph/0406091"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "45fd689b-a17d-4626-a40f-dcfc523237c8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}