{
  "annotation_id": "60244594-cdbd-4ae4-aeee-a27dfa02304b",
  "date_created": "2026-03-02T18:02:17.099000Z",
  "date_modified": "2026-03-02T18:02:17.099000Z",
  "file_hash": "87dd2bc750fb133e30723c8697a51228b47abd43c04125da2551cfa53692f421",
  "private": false,
  "record": {
    "abstract": "We investigate the concurrence and Bell violation of the standard Werner\nstate or Werner-like states in the presence of collective dephasing. It is\nshown that the standard Werner state and certain kinds of Werner-like states\nare robust against the collective dephasing, and some kinds of Werner-like\nstates is fragile and becomes completely disentangled in a finite-time. The\nthreshold time of complete disentanglement of the fragile Werner-like states is\ngiven. The influence of external driving field on the finite-time\ndisentanglement of the standard Werner state or Werner-like states is\ndiscussed. Furthermore, we present a simple method to control the stationary\nstate entanglement and Bell violation of two qubits. Finally, we show that the\ntheoretical calculations of fidelity based on the initial Werner state\nassumption well agree with previous experimental results.",
    "arxiv_id": "quant-ph/0503143",
    "authors": [
      "Shang-Bin Li",
      "Jing-Bo Xu"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1140/epjd/e2006-00216-x",
    "journal_ref": "EUROPEAN PHYSICAL JOURNAL D 41, 377 (2007)",
    "title": "Robust and fragile Werner states in the collective dephasing",
    "url": "https://arxiv.org/abs/quant-ph/0503143"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "31d0e6a0-4857-4b2b-920e-0a967c2adc58",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}