{
  "annotation_id": "71831646-c3bd-4e20-9f14-f8257fe1007e",
  "date_created": "2026-03-02T18:00:49.906000Z",
  "date_modified": "2026-03-02T18:00:49.906000Z",
  "file_hash": "537ed9305e662bb50ebc5a457504e3bfb2525316f1a212fc51597b787ef927c6",
  "private": false,
  "record": {
    "abstract": "We detect the vortex evolution from the increase of the fractional phase step\nby interfering two beams of opposite but equal fractional step increment.The\ninterference pattern generated shows evidence of the birth of an additional\nsingle extra charge as the fractional phase step increase extends above a\nhalf-integer value",
    "arxiv_id": "physics/0403118",
    "authors": [
      "W. M. Lee",
      "X. -C. Yuan",
      "K. Dholakia"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1016/j.optcom.2004.05.035",
    "title": "Experimental observation of optical vortex evolution in a Gaussian beam   with an embedded fractional phase step",
    "url": "https://arxiv.org/abs/physics/0403118"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fd8ae881-52cb-4a83-b47e-a0d08a6c1f32",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}