{
  "annotation_id": "edb95025-8c71-4911-96ad-d7cc5a01ba90",
  "date_created": "2026-03-02T18:02:03.239000Z",
  "date_modified": "2026-03-02T18:02:03.239000Z",
  "file_hash": "9ee754a5178c37d3d9218c9e73b6d84828a3ca53e646a835debd25319ccf6a80",
  "private": false,
  "record": {
    "abstract": "We present an efficient scheme for the controlled generation of pure\ntwo-qubit states possessing {\\em any} desired degree of entanglement and a {\\em\nprescribed} symmetry in two cavity QED based systems, namely, cold trapped ions\nand flying atoms. This is achieved via on-resonance ion/atom-cavity couplings\nwhich are time-dependent and asymmetric, leading to a trapping vacuum state\ncondition which does not arise for identical couplings. A duality in the role\nof the coupling ratio yields states with a given concurrence but opposing\nsymmetries. The experimental feasibility of the proposed scheme is also\ndiscussed.",
    "arxiv_id": "quant-ph/0311111",
    "authors": [
      "Alexandra Olaya-Castro",
      "Neil F. Johnson",
      "Luis Quiroga"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.70.020301",
    "journal_ref": "Phys. Rev A 70 020301(R) (2004)",
    "title": "Ultrafast deterministic generation of entanglement in a time-dependent   asymmetric two-qubit-cavity system",
    "url": "https://arxiv.org/abs/quant-ph/0311111"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0f2a3acd-24ec-42ee-a6dc-5c53bbccc1a0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}