{
  "annotation_id": "9fb2b157-fa11-48ca-8b79-c3f763ffa0fc",
  "date_created": "2026-03-02T18:02:48.107000Z",
  "date_modified": "2026-03-02T18:02:48.107000Z",
  "file_hash": "f22da379b1d9bd59b577903ba8ee35722bcbfaa1d479c13fd74b69016a460c50",
  "private": false,
  "record": {
    "abstract": "It is shown that the outcomes of measurements on systems in separable mixed\nstates can be partitioned, via subsequent measurements on a disentangled\nextraneous system, into subensembles that display the statistics of entangled\nstates. This motivates the introduction of the concept of \"counterfactual\"\nentanglement, which can be associated with all separable mixed states including\nthose that are factorable. This type of entanglement gives rise to a new kind\nof postselection-induced Bell inequality violation. The significance of\ncounterfactual entanglement, and its physical implications, are assessed.",
    "arxiv_id": "quant-ph/9907109",
    "authors": [
      "Oliver Cohen"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.60.80",
    "journal_ref": "Phys. Rev. A, volume 60, page 80 (1999)",
    "title": "Counterfactual entanglement and nonlocal correlations in separable   states",
    "url": "https://arxiv.org/abs/quant-ph/9907109"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2a061d71-cee7-4535-825d-6283db5bdc50",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}