{
  "annotation_id": "c923ec31-612d-420a-a7fd-a62658eefff3",
  "date_created": "2026-03-02T18:01:53.095000Z",
  "date_modified": "2026-03-02T18:01:53.095000Z",
  "file_hash": "97a64fdf6b0f85065fbc0081dca864624c8b65ee3238295df54558dabec182ef",
  "private": false,
  "record": {
    "abstract": "A quantum gate is realized by specific unitary transformations operating on\nstates representing qubits. Considering a quantum system employed as an element\nin a quantum computing scheme, the task is therefore to enforce the\npre-specified unitary transformation. This task is carried out by an external\ntime dependent field. Optimal control theory has been suggested as a method to\ncompute the external field which alters the evolution of the system such that\nit performs the desire unitary transformation. This study compares two recent\nimplementations of optimal control theory to find the field that induces a\nquantum gate. The first approach is based on the equation of motion of the\nunitary transformation. The second approach generalizes the state to state\nformulation of optimal control theory. This work highlight the formal relation\nbetween the two approaches.",
    "arxiv_id": "quant-ph/0208147",
    "authors": [
      "Jose P. Palao",
      "Ronnie Kosloff"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Forcing a unitary transformation by an external field: comparing two   approaches based on optimal control theory",
    "url": "https://arxiv.org/abs/quant-ph/0208147"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fa7d19fd-6652-45e0-bc37-2761a0ac33d3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}