{
  "annotation_id": "e1a8af8b-c4e7-4f58-9f87-44ac5f02e2bf",
  "date_created": "2026-03-02T18:02:03.428000Z",
  "date_modified": "2026-03-02T18:02:03.428000Z",
  "file_hash": "160f7d3c9ea5e12143a19f671a638fea6e0494c98cd9129610aacd1f722fc354",
  "private": false,
  "record": {
    "abstract": "We explore the dynamics of entanglement in classically chaotic systems by\nconsidering a multiqubit system that behaves collectively as a spin system\nobeying the dynamics of the quantum kicked top. In the classical limit, the\nkicked top exhibits both regular and chaotic dynamics depending on the strength\nof the chaoticity parameter $\\kappa$ in the Hamiltonian. We show that the\nentanglement of the multiqubit system, considered for both bipartite and\npairwise entanglement, yields a signature of quantum chaos. Whereas bipartite\nentanglement is enhanced in the chaotic region, pairwise entanglement is\nsuppressed. Furthermore, we define a time-averaged entangling power and show\nthat this entangling power changes markedly as $\\kappa$ moves the system from\nbeing predominantly regular to being predominantly chaotic, thus sharply\nidentifying the edge of chaos. When this entangling power is averaged over\ninitial states, it yields a signature of global chaos. The qualitative behavior\nof this global entangling power is similar to that of the classical Lyapunov\nexponent.",
    "arxiv_id": "quant-ph/0312047",
    "authors": [
      "Xiaoguang Wang",
      "Shohini Ghose",
      "Barry C Sanders",
      "Bambi Hu"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevE.70.016217",
    "journal_ref": "Phys. Rev. E 70, 016217 (2004)",
    "title": "Entanglement as a signature of quantum chaos",
    "url": "https://arxiv.org/abs/quant-ph/0312047"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "89a258a6-7190-4ec7-86bc-c5244778b307",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}