{
  "annotation_id": "9f580dc8-9819-4407-8ed2-a270d21b4f1a",
  "date_created": "2026-03-02T18:01:56.519000Z",
  "date_modified": "2026-03-02T18:01:56.519000Z",
  "file_hash": "6d8d573944836af34b57a3971a1eb9cee6e8efef6efc63486aa9b4833b4c34cc",
  "private": false,
  "record": {
    "abstract": "Analyzing the properties of entanglement in many-particle spin-1/2 systems is\ngenerally difficult because the system\u0027s Hilbert space grows exponentially with\nthe number of constituent particles, $N$. Fortunately, it is still possible to\ninvestigate many-particle entanglement when the state of the system possesses\nsufficient symmetry. In this paper, we present a practical method for\nefficiently computing various bipartite entanglement measures for states in the\nsymmetric subspace and perform these calculations for $N\\sim 10^3$. By\nconsidering all possible bipartite splits, we construct a picture of the\nmultiscale entanglement in large symmetric systems. In particular, we\ncharacterize dynamically generated spin-squeezed states by comparing them to\nknown reference states (e.g., GHZ and Dicke states) and new families of states\nwith near-maximal bipartite entropy. We quantify the trade-off between the\ndegree of entanglement and its robustness to particle loss, emphasizing that\nsubstantial entanglement need not be fragile.",
    "arxiv_id": "quant-ph/0210117",
    "authors": [
      "John K. Stockton",
      "JM Geremia",
      "Andrew C. Doherty",
      "Hideo Mabuchi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.67.022112",
    "journal_ref": "Phys. Rev. A 67, 022112 (2003)",
    "title": "Characterizing the entanglement of symmetric many-particle spin-1/2   systems",
    "url": "https://arxiv.org/abs/quant-ph/0210117"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "43bca67d-1255-49d8-a2fa-7fe664207dc0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}