{
  "annotation_id": "419c6bad-bac8-4509-ad76-3ae91dc0b503",
  "date_created": "2026-03-02T18:02:06.988000Z",
  "date_modified": "2026-03-02T18:02:06.988000Z",
  "file_hash": "861f892d6f673f5c86e46d0332f9861536bbd4a24529ad6e739ae1a0b31001e7",
  "private": false,
  "record": {
    "abstract": "We consider a two-qubit unitary operation along with arbitrary local unitary\noperations acts on a two-qubit pure state, whose entanglement is C_0. We give\nthe conditions that the final state can be maximally entangled and be\nnon-entangled. When the final state can not be maximally entangled, we give the\nmaximal entanglement C_max it can reach. When the final state can not be\nnon-entangled, we give the minimal entanglement C_min it can reach. We think\nC_max and C_min represent the entanglement changing power of two-qubit unitary\noperations. According to this power we define an order of gates.",
    "arxiv_id": "quant-ph/0403163",
    "authors": [
      "M. -Y. Ye",
      "Dong Sun",
      "Y. -S. Zhang",
      "G. -C. Guo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.70.022326",
    "journal_ref": "Phys. Rev. A 70, 022326 (2004)",
    "title": "Entanglement changing power of two-qubit unitary operations",
    "url": "https://arxiv.org/abs/quant-ph/0403163"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6ef888d1-bd26-46a3-adb7-412d4bb837dc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}