{
  "annotation_id": "a9d75be5-cbfd-40cd-a1f6-841b425ceff8",
  "date_created": "2026-03-02T18:02:03.519000Z",
  "date_modified": "2026-03-02T18:02:03.519000Z",
  "file_hash": "82893263b16f2b1175b93786340530615933fb81dd45400be33f46ed92ddb20e",
  "private": false,
  "record": {
    "abstract": "We study the stability of entanglement in a quantum computer implementing an\nefficient quantum algorithm, which simulates a quantum chaotic dynamics. For\nthis purpose, we perform a forward-backward evolution of an initial state in\nwhich two qubits are in a maximally entangled Bell state. If the dynamics is\nreversed after an evolution time $t_r$, there is an echo of the entanglement\nbetween these two qubits at time $t_e=2t_r$. Perturbations attenuate the\npairwise entanglement echo and generate entanglement between these two qubits\nand the other qubits of the quantum computer.",
    "arxiv_id": "quant-ph/0309146",
    "authors": [
      "Davide Rossini",
      "Giuliano Benenti",
      "Giulio Casati"
    ],
    "categories": [
      "quant-ph",
      "cond-mat",
      "nlin.CD"
    ],
    "doi": "10.1103/PhysRevA.69.052317",
    "journal_ref": "Phys. Rev. A 69, 052317 (2004)",
    "title": "Entanglement Echoes in Quantum Computation",
    "url": "https://arxiv.org/abs/quant-ph/0309146"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2ff06aa8-eb4a-4786-b6d7-f98c17a3dd75",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}