{
  "annotation_id": "710cc176-c0d9-4151-a24c-38b243086307",
  "date_created": "2026-03-02T18:02:45.141000Z",
  "date_modified": "2026-03-02T18:02:45.141000Z",
  "file_hash": "35b82d93a624ee75d37048c1c57a3aec99384a233ac53a2cdfa20bc9ed905269",
  "private": false,
  "record": {
    "abstract": "Generalized single-atom Maxwell-Bloch equations for optically dense media are\nderived taking into account non-cooperative radiative atom-atom interactions.\nApplying a Gaussian approximation and formally eliminating the degrees of\nfreedom of the quantized radiation field and of all but a probe atom leads to\nan effective time-evolution operator for the probe atom. The mean coherent\namplitude of the local field seen by the atom is shown to be given by the\nclassical Lorentz-Lorenz relation. The second-order correlations of the field\nlead to terms that describe relaxation or pump processes and level shifts due\nto multiple scattering or reabsorption of spontaneously emitted photons. In the\nMarkov limit a nonlinear and nonlocal single-atom density matrix equation is\nderived. To illustrate the effects of the quantum corrections we discuss\namplified spontaneous emission and radiation trapping in a dense ensemble of\ninitially inverted two-level atoms and the effects of radiative interactions on\nintrinsic optical bistability in coherently driven systems.",
    "arxiv_id": "quant-ph/9809087",
    "authors": [
      "Michael Fleischhauer",
      "Susanne F. Yelin"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.59.2427",
    "title": "Radiative atom-atom interactions in optically dense media: Quantum   corrections to the Lorentz-Lorenz formula",
    "url": "https://arxiv.org/abs/quant-ph/9809087"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1fa59213-e52b-4ea2-b5fb-d689a468826e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}