{
  "annotation_id": "7b70f106-f587-49f7-8846-f27633c1f80f",
  "date_created": "2026-03-02T18:02:19.901000Z",
  "date_modified": "2026-03-02T18:02:19.901000Z",
  "file_hash": "d272cb2f9060c8020833e8db9dec8ee57b00134b103057f5a8ad3062042f20f7",
  "private": false,
  "record": {
    "abstract": "Quantum processors which combine the long decoherence times of spin qubits\ntogether with fast optical manipulation of excitons have recently been the\nsubject of several proposals. I show here that arbitrary single- and entangling\ntwo-qubit gates can be performed in a chain of perpetually coupled spin qubits\nsolely by using laser pulses to excite higher lying states. It is also\ndemonstrated that universal quantum computing is possible even if these pulses\nare applied {\\it globally} to a chain; by employing a repeating pattern of four\ndistinct qubit units the need for individual qubit addressing is removed. Some\ncurrent experimental qubit systems would lend themselves to implementing this\nidea.",
    "arxiv_id": "quant-ph/0508192",
    "authors": [
      "Brendon W. Lovett"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1367-2630/8/5/069",
    "journal_ref": "New Journal of Physics 8 69 (2006)",
    "title": "Global Optical Control of a Quantum Spin Chain",
    "url": "https://arxiv.org/abs/quant-ph/0508192"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "15cf4c4e-5a99-4b26-9bdb-0e487f2459ed",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}