{
  "annotation_id": "5605a71f-a82b-4a6a-a152-405b60addc66",
  "date_created": "2026-03-02T18:01:49.317000Z",
  "date_modified": "2026-03-02T18:01:49.317000Z",
  "file_hash": "7fbad757e6cd0c2c75be2290e8987ec0cd2a381312ff1a15f7f8df292d7a41d6",
  "private": false,
  "record": {
    "abstract": "We describe a method for achieving arbitrary 1-qubit gates and controlled-NOT\ngates within the context of the Single Cooper Pair Box (SCB) approach to\nquantum computing. Such gates are sufficient to support universal quantum\ncomputation. Quantum gate operations are achieved by applying sequences of\nvoltages and magnetic fluxes to single qubits or pairs of qubits. Neither the\ntemporal duration, nor the starting time, of a gate operation is used as a\ncontrol parameter. As a result, the quantum gates have a constant and known\nduration, and depend upon standard control parameter sequences regardless of\nwhen the gate operation begins. This simplifies the integration of quantum\ngates into parallel, synchronous, quantum circuits. In addition, we demonstrate\nthe ability to fabricate such gates, and large-scale quantum circuits, using\ncurrent e-beam lithography technology. These features make the SCB-based scheme\na credible contender for practical quantum computer hardware.",
    "arxiv_id": "quant-ph/0112025",
    "authors": [
      "P. Echternach",
      "C. P. Williams",
      "S. C. Dultz",
      "P. Delsing",
      "S. L. Braunstein",
      "J. P. Dowling"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Quantum Information and Computation, Vol. 1, Special (2001)\n  143-150",
    "title": "Universal Quantum Gates for Single Cooper Pair Box Based Quantum   Computing",
    "url": "https://arxiv.org/abs/quant-ph/0112025"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0fcc221a-61aa-4037-abbb-3c9c47bcf2da",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}