{
  "annotation_id": "d1b8ab19-b558-4dbb-8dce-a065fe5be974",
  "date_created": "2026-03-02T18:02:34.531000Z",
  "date_modified": "2026-03-02T18:02:34.531000Z",
  "file_hash": "0f2cd06dbfa2717b352a577e240f0fedf106b87c697323d9c409513028259f78",
  "private": false,
  "record": {
    "abstract": "We report an experiment in which an optical vortex is stored in a vapor of Rb\natoms. Due to its 2\\pi phase twist, this mode, also known as the Laguerre-Gauss\nmode, is topologically stable and cannot unwind even under conditions of strong\ndiffusion. To supplement our finding, we stored a flat phase Gaussian beam with\na dark center. Contrary to the optical vortex, which stays stable for over 100\nmicroseconds, the dark center in the retrieved flat-phased image was filled\nwith light at storage times as small as 10 microseconds. This experiment proves\nthat higher electromagnetic modes can be converted into atomic coherences, and\nthat modes with phase singularities are robust to decoherence effects such as\ndiffusion. This opens the possibility to more elaborate schemes for two\ndimensional information storage in atomic vapors.",
    "arxiv_id": "quant-ph/0701132",
    "authors": [
      "R. Pugatch",
      "M. Shuker",
      "O. Firstenberg",
      "A. Ron",
      "N. Davidson"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.98.203601",
    "journal_ref": "Phys. Rev. Lett. 98, 203601 (2007)",
    "title": "Topological stability of stored optical vortices",
    "url": "https://arxiv.org/abs/quant-ph/0701132"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7ee07c23-e3df-4ce3-8217-e01cb0245c23",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}