{
  "annotation_id": "d7b70fe7-21dc-4ba6-9a18-817fd19b3030",
  "date_created": "2026-03-02T18:02:47.726000Z",
  "date_modified": "2026-03-02T18:02:47.726000Z",
  "file_hash": "3c750ab9a252fd2705379dcc10960b2a9e022782fe7d1d34f3963a9b74907908",
  "private": false,
  "record": {
    "abstract": "Optimal universal entanglement processes are discussed which entangle two\nquantum systems in an optimal way for all possible initial states. It is\ndemonstrated that the linear character of quantum theory which enforces the\npeaceful coexistence of quantum mechanics and relativity imposes severe\nrestrictions on the structure of the resulting optimally entangled states.\nDepending on the dimension of the one-particle Hilbert space such a universal\nprocess generates either a pure Bell state or mixed entangled states. In the\nlimit of very large dimensions of the one-particle Hilbert space the\nvon-Neumann entropy of the optimally entangled state differs from the one of\nthe maximally mixed two-particle state by one bit only.",
    "arxiv_id": "quant-ph/9907104",
    "authors": [
      "G. Alber"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Entanglement and the linearity of quantum mechanics",
    "url": "https://arxiv.org/abs/quant-ph/9907104"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1c9238fe-946e-4090-b1e9-486f3c070e27",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}