Nonlinear dynamics of atoms in a crossed optical dipole trap

  1. González-Férez, R. 23
  2. Iñarrea, M. 1
  3. Salas, J.P. 1
  4. Schmelcher, P. 2
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 University of Hamburg
    info

    University of Hamburg

    Hamburgo, Alemania

    ROR https://ror.org/00g30e956

  3. 3 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

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Revista:
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

ISSN: 1539-3755

Año de publicación: 2014

Volumen: 90

Número: 6

Tipo: Artículo

DOI: 10.1103/PHYSREVE.90.062919 SCOPUS: 2-s2.0-84920120998 WoS: WOS:000347207000019 GOOGLE SCHOLAR

Otras publicaciones en: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

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Resumen

We explore the classical dynamics of atoms in an optical dipole trap formed by two identical Gaussian beams propagating in perpendicular directions. The phase space is a mixture of regular and chaotic orbits, the latter becoming dominant as the energy of the atoms increases. The trapping capabilities of these perpendicular Gaussian beams are investigated by considering an atomic ensemble in free motion. After a sudden turn on of the dipole trap, a certain fraction of atoms in the ensemble remains trapped. The majority of these trapped atoms has energies larger than the escape channels, which can be explained by the existence of regular and chaotic orbits with very long escape times.