{
  "annotation_id": "9ffe2776-7431-4333-b895-e89badcde875",
  "date_created": "2026-03-02T18:02:16.991000Z",
  "date_modified": "2026-03-02T18:02:16.991000Z",
  "file_hash": "9f54246629cc26b6b227e7d72ed0e00987a06b4aecffc51eb99ac916851dc804",
  "private": false,
  "record": {
    "abstract": "We derive a new inequality for entanglement for a mixed four-partite state.\nEmploying this inequality, we present a one-shot lower bound for entanglement\ncost and prove that entanglement cost is strictly larger than zero for any\nentangled state. We demonstrate that irreversibility occurs in the process of\nformation for all non-distillable entangled states. In this way we solve a long\nstanding problem, of how \"real\" is entanglement of bound entangled states.\nUsing the new inequality we also prove impossibility of local-cloning of a\nknown entangled state.",
    "arxiv_id": "quant-ph/0506138",
    "authors": [
      "Dong Yang",
      "Michal Horodecki",
      "Ryszard Horodecki",
      "Barbara Synak-Radtke"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.95.190501",
    "journal_ref": "Phys. Rev. Lett. 95, 190501 (2005)",
    "title": "Irreversibility for all bound entangled states",
    "url": "https://arxiv.org/abs/quant-ph/0506138"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "272131a0-1994-4229-bf9b-8a1bba0aa547",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}