2003/07/29 by S. J. van Enk · 4 citations
Engineering · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Near-Field Optical Microscopy #Orbital Angular Momentum in Optics #quant-ph
paper · pdf · doi:10.1103/physreva.69.043813
published as Phys. Rev.A 69, 043813 (2004) · 8 pages, 3 figures
arxiv created 2003/07/29 · openalex publication_date 2004/04/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We describe the resonant interaction of an atom with a strongly focused light beam by expanding the field in multipole waves. For a classical field, or when the field is described by a coherent state, we find that both intensity pattern and photon statistics of the scattered light are fully determined by a small set of parameters. One crucial parameter is the overlap of the field with the appropriate dipole wave corresponding to the relevant dipole transition in the atom. We calculate this overlap for a particular set of strongly focused longitudinally polarized light beams, whose spot size is only 0.1\ensuremathλ2, as discussed by S. Quabis et al. [Appl. Phys. B 72, 109 (2001)].