{
  "annotation_id": "999fad93-a1be-4e09-8954-1ae99d4464dd",
  "date_created": "2026-03-02T18:02:13.515000Z",
  "date_modified": "2026-03-02T18:02:13.515000Z",
  "file_hash": "0b6690142fb266f7907d20ef017acf5568f923ea43e5ee60b57a3f989ff00e61",
  "private": false,
  "record": {
    "abstract": "We consider a universal set of quantum gates encoded within a perturbed\ndecoherence-free subspace of four physical qubits. Using second-order\nperturbation theory and a measuring device modeled by an infinite set of\nharmonic oscillators, simply coupled to the system, we show that continuous\nobservation of the coupling agent induces inhibition of the decoherence due to\nspurious perturbations. We thus advance the idea of protecting or even creating\na decoherence-free subspace for processing quantum information.",
    "arxiv_id": "quant-ph/0501064",
    "authors": [
      "Paulo E. M. F. Mendonca",
      "Marcelo A. Marchiolli",
      "Reginaldo d. J. Napolitano"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/38/6/L04",
    "journal_ref": "J. Phys. A: Math. Gen. 38 (2005) L95-L102",
    "title": "Using continuous measurement to protect a universal set of quantum gates   within a perturbed decoherence-free subspace",
    "url": "https://arxiv.org/abs/quant-ph/0501064"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a670844b-7d9c-4409-8e12-9032d10e8096",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}