{
  "annotation_id": "8a5ddfe9-8c85-4a93-9c33-47622dacfd0d",
  "date_created": "2026-03-02T18:01:52.158000Z",
  "date_modified": "2026-03-02T18:01:52.158000Z",
  "file_hash": "1d47d8ac7ccfdc1842abb589299d73008bda72922f133395a292655a5dbe9fab",
  "private": false,
  "record": {
    "abstract": "Due to the no-cloning theorem, the unknown quantum state can only be cloned\napproximately or exactly with some probability. There are two types of cloners:\nuniversal and state-dependent cloner. The optimal universal cloner has been\nfound and could be viewed as a special state-dependent quantum cloner which has\nno information about the states. In this paper, we investigate the\nstate-dependent cloning when the state-set contains more than two states. We\nget some bounds of the global fidelity for these processes. This method is not\ndependent on the number of the states contained in the state-set. It is also\nindependent of the numbers of copying.",
    "arxiv_id": "quant-ph/0209094",
    "authors": [
      "Y. -J. Han",
      "Y. -S. Zhang",
      "G. -C. Guo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.052301",
    "title": "Bounds for state-dependent quantum cloning",
    "url": "https://arxiv.org/abs/quant-ph/0209094"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4284ff76-6aa9-4b45-9c6a-ca5f2b9060db",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}