{
  "annotation_id": "4cf8eb39-cb77-439e-8bf2-2c70185cc338",
  "date_created": "2026-03-02T18:02:27.449000Z",
  "date_modified": "2026-03-02T18:02:27.449000Z",
  "file_hash": "27e2be794cbc95133413006841db94ec05aa4d763d2a63f4d37063fe2873a690",
  "private": false,
  "record": {
    "abstract": "We demonstrate the coherent transfer of the orbital angular momentum of a\nphoton to an atom in quantized units of hbar, using a 2-photon stimulated Raman\nprocess with Laguerre-Gaussian beams to generate an atomic vortex state in a\nBose-Einstein condensate of sodium atoms. We show that the process is coherent\nby creating superpositions of different vortex states, where the relative phase\nbetween the states is determined by the relative phases of the optical fields.\nFurthermore, we create vortices of charge 2 by transferring to each atom the\norbital angular momentum of two photons.",
    "arxiv_id": "quant-ph/0607171",
    "authors": [
      "M. F. Andersen",
      "C. Ryu",
      "Pierre Clade",
      "V. Natarajan",
      "A. Vaziri",
      "K. Helmerson",
      "W. D. Phillips"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.97.170406",
    "title": "Quantized Rotation of Atoms From Photons with Orbital Angular Momentum",
    "url": "https://arxiv.org/abs/quant-ph/0607171"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "943497f9-c755-4651-9843-5327629279ea",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}