{
  "annotation_id": "dd834b2c-8731-4d29-899b-8d80fc17b6bb",
  "date_created": "2026-03-02T18:01:41.564000Z",
  "date_modified": "2026-03-02T18:01:41.564000Z",
  "file_hash": "8b706d86e7ce06a06c3f97408e1fe55db3cb7f03d6e3e519c770693573bca8e4",
  "private": false,
  "record": {
    "abstract": "We demonstrate a general method to measure the quantum state of an angular\nmomentum of arbitrary magnitude. The (2F+1) x (2F+1) density matrix is\ncompletely determined from a set of Stern-Gerlach measurements with (4F+1)\ndifferent orientations of the quantization axis. We implement the protocol for\nlaser cooled Cesium atoms in the 6S_{1/2}(F=4) hyperfine ground state and apply\nit to a variety of test states prepared by optical pumping and Larmor\nprecession. A comparison of input and measured states shows typical\nreconstruction fidelities of about 0.95.",
    "arxiv_id": "quant-ph/0101017",
    "authors": [
      "Gerd Klose",
      "Greg Smith",
      "Poul S. Jessen"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.86.4721",
    "title": "Measuring the Quantum State of a Large Angular Momentum",
    "url": "https://arxiv.org/abs/quant-ph/0101017"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cc99817d-dd9e-4b32-ba12-511fcda10134",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}