{
  "annotation_id": "adc20e2f-822f-4253-a1e6-16c5fd440c94",
  "date_created": "2026-03-02T18:02:12.915000Z",
  "date_modified": "2026-03-02T18:02:12.915000Z",
  "file_hash": "1a2659ac233ec02cf62c5f9e33041130135258d3b05c932782285d416b7e0b78",
  "private": false,
  "record": {
    "abstract": "Optimal implementation of quantum gates is crucial for designing a quantum\ncomputer. The necessary condition for optimal construction of a two-qubit\nunitary operation is obtained. It can be proved that the B gate is the unique\ngate that can construct a two-qubit universal circuit with only two\napplications, i.e. this condition is also sufficient in the case of two\napplications of the elementary two-qubit gate. It is also shown that one half\nof perfect entanglers can not simulate an arbitrary two-qubit gate with only 3\napplications.",
    "arxiv_id": "quant-ph/0411058",
    "authors": [
      "Yong-Sheng Zhang",
      "Ming-Yong Ye",
      "Guang-Can Guo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.71.062331",
    "journal_ref": "Phys. Rev. A 71, 062331 (2005)",
    "title": "Conditions for optimal construction of two-qubit non-local gates",
    "url": "https://arxiv.org/abs/quant-ph/0411058"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "49fb34a7-7972-4678-af18-d58ca126dc33",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}