{
  "annotation_id": "2814a0df-95e1-4a30-8294-d2075eece7dd",
  "date_created": "2026-03-02T18:01:48.477000Z",
  "date_modified": "2026-03-02T18:01:48.477000Z",
  "file_hash": "cff764009c75427ea6cbfa94325ebbcb7ca040ccd2b20d478ebcb3a702905bf2",
  "private": false,
  "record": {
    "abstract": "General conditions are derived for preventing the decoherence of a single\ntwo-state quantum system (qubit) in a thermal bath. The employed auxiliary\nsystems required for this purpose are merely assumed to be weak for the general\ncondition while various examples such as extra qubits and extra classical\nfields are studied for applications in quantum information processing. The\ngeneral condition is confirmed with well known approaches towards inhibiting\ndecoherence. A novel approach for decoherence-free quantum memories and quantum\noperations is presented by placing the qubit into the center of a sphere with\nextra qubits on its surface.",
    "arxiv_id": "quant-ph/0203012",
    "authors": [
      "Guihua Zeng",
      "Christoph H. Keitel"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.022306",
    "title": "Inhibiting decoherence via ancilla processes",
    "url": "https://arxiv.org/abs/quant-ph/0203012"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4957d6f7-90df-43e0-97d5-e8d97a8357c3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}