{
  "annotation_id": "222ee44e-55e8-4843-8e1e-eaa8b1fba0b4",
  "date_created": "2026-03-02T18:02:13.635000Z",
  "date_modified": "2026-03-02T18:02:13.635000Z",
  "file_hash": "34af7bb9bebcc0834cb5840d4d58c67bb81ddf28607a1b7e2c4f0546036146a3",
  "private": false,
  "record": {
    "abstract": "We give a definition of asymmetric universal entangling machine which\nentangles a system in an unknown state to a specially prepared ancilla. The\nmachine produces a fixed state-independent amount of entanglement in exchange\nto a fixed degradation of the system state fidelity. We describe explicitly\nsuch a machine for any quantum system having $d$ levels and prove its\noptimality. We show that a $d^2$-dimensional ancilla is sufficient for reaching\noptimality. The introduced machine is a generalization to a number of widely\ninvestigated universal quantum devices such as the symmetric and asymmetric\nquantum cloners, the symmetric quantum entangler, the quantum information\ndistributor and the universal-NOT gate.",
    "arxiv_id": "quant-ph/0412188",
    "authors": [
      "Dmitri Horoshko",
      "Mikhail Kolobov",
      "Sergei Kilin"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1134/S0030400X07070247",
    "journal_ref": "Optics and Spectroscopy 103, 153-164 (2007)",
    "title": "Asymmetric universal entangling machine",
    "url": "https://arxiv.org/abs/quant-ph/0412188"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3f1f1775-5825-4f0c-a8b1-6fc5219f55f9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}