{
  "annotation_id": "e0491ce4-1c3e-429d-aaf0-20b6dc8bc85e",
  "date_created": "2026-03-02T18:02:27.708000Z",
  "date_modified": "2026-03-02T18:02:27.708000Z",
  "file_hash": "55fd4061a6fbca2c0f8bfa4e10364a32aa434348e2a8d46e2d478918f2288009",
  "private": false,
  "record": {
    "abstract": "Two non-interacting qubits are coupled to an environment. Both coupling and\nenvironment are represented by random matrix ensembles. The initial state of\nthe pair is a Bell state, though we also consider arbitrary pure states.\nDecoherence of the pair is evaluated analytically in terms of purity; Monte\nCarlo calculations confirm these results and also yield the concurrence of the\npair. Entanglement within the pair accelerates decoherence. Numerics display\nthe relation between concurrence and purity known for Werner states, allowing\nus to give a formula for concurrence decay.",
    "arxiv_id": "quant-ph/0605169",
    "authors": [
      "Carlos Pineda",
      "Thomas H. Seligman"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.75.012106",
    "journal_ref": "Phys. Rev. A 75(1), 012106, (2007).",
    "title": "A Bell pair in a generic random matrix environment",
    "url": "https://arxiv.org/abs/quant-ph/0605169"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0dde9aca-ec9f-4ba8-bd44-ed5f556c1f38",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}