{
  "annotation_id": "d48a342b-ee6a-4740-9102-9258a48e093b",
  "date_created": "2026-03-02T18:01:45.789000Z",
  "date_modified": "2026-03-02T18:01:45.789000Z",
  "file_hash": "0bd96159080c5565eb4d05d8d83bb4192d82c774e71db6171e165f0c8d37c1f9",
  "private": false,
  "record": {
    "abstract": "How common is large-scale entanglement in nature? As a first step towards\naddressing this question, we study the robustness of multi-party entanglement\nunder local decoherence, modeled by partially depolarizing channels acting\nindependently on each subsystem. Surprisingly, we find that n-qubit GHZ\nentanglement can stand more than 55 % local depolarization in the limit of n\ngoing to infinity, and that GHZ states are more robust than other generic\nstates of 3 and 4 qubits. We also study spin-squeezed states in the limit n\ngoing to infinity and find that they too can stand considerable local\ndepolarization.",
    "arxiv_id": "quant-ph/0109102",
    "authors": [
      "Christoph Simon",
      "Julia Kempe"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.65.052327",
    "journal_ref": "Phys. Rev. A, Vol. 65 (5), 052327 (2002)",
    "title": "Robustness of Multi-Party Entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0109102"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e0e4ba2e-ea93-4903-9f2b-9a199bb467e7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}