{
  "annotation_id": "9c04c86f-0b49-4174-9363-73527a8044c4",
  "date_created": "2026-03-02T18:02:27.045000Z",
  "date_modified": "2026-03-02T18:02:27.045000Z",
  "file_hash": "92ae4c6c0079bf15caf22f459bded019df2de1fdef2a84b1c3137125f4e41dd4",
  "private": false,
  "record": {
    "abstract": "The photon density operator function is used to calculate light beam\npropagation through turbulent atmosphere. A kinetic equation for the photon\ndistribution function is derived and solved using the method of\ncharacteristics. Optical wave correlations are described in terms of photon\ntrajectories that depend on fluctuations of the refractive index. It is shown\nthat both linear and quadratic disturbances produce sizable effects for\nlong-distance propagation. The quadratic terms are shown to suppress the\ncorrelation of waves with different wave vectors. We examine the intensity\nfluctuations of partially coherent beams (beams whose initial spatial coherence\nis partially destroyed). Our calculations show that it is possible to\nsignificantly reduce the intensity fluctuations by using a partially coherent\nbeam. The physical mechanism responsible for this pronounced reduction is\nsimilar to that of the Hanbury-Braun, Twiss effect.",
    "arxiv_id": "quant-ph/0604213",
    "authors": [
      "G. P. Berman",
      "A. A. Chumak"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.013805",
    "title": "Photon Distribution Function for Long-Distance Propagation of Partially   Coherent Beams through the Turbulent Atmosphere",
    "url": "https://arxiv.org/abs/quant-ph/0604213"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3350bbec-ecff-423f-8668-556411ce567a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}