{
  "annotation_id": "583d902e-819f-41fc-b67f-f3c7973e51cf",
  "date_created": "2026-03-02T18:01:55.398000Z",
  "date_modified": "2026-03-02T18:01:55.398000Z",
  "file_hash": "439cf483e8fffa08499b8d918ae706f058bb32df01212d2d4a51ab817ecae70a",
  "private": false,
  "record": {
    "abstract": "In this paper we address the problem of detection of entanglement using only\nfew local measurements when some knowledge about the state is given. The idea\nis based on an optimized decomposition of witness operators into local\noperators. We discuss two possible ways of optimizing this local decomposition.\nWe present several analytical results and estimates for optimized detection\nstrategies for NPT states of 2x2 and NxM systems, entangled states in 3 qubit\nsystems, and bound entangled states in 3x3 and 2x4 systems.",
    "arxiv_id": "quant-ph/0210134",
    "authors": [
      "O. Guehne",
      "P. Hyllus",
      "D. Bruss",
      "A. Ekert",
      "M. Lewenstein",
      "C. Macchiavello",
      "A. Sanpera"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1080/09500340308234554",
    "journal_ref": "J. Mod. Opt. 50 (6-7), 1079-1102, (2003)",
    "title": "Experimental detection of entanglement via witness operators and local   measurements",
    "url": "https://arxiv.org/abs/quant-ph/0210134"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c920c38c-fd0e-435c-9061-682db522444f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}