Interband Heating Processes in a Periodically Driven Optical Lattice

@article{Strter2016InterbandHP,
  title={Interband Heating Processes in a Periodically Driven Optical Lattice},
  author={Christoph Str{\"a}ter and Andr'e Eckardt},
  journal={Zeitschrift f{\"u}r Naturforschung A},
  year={2016},
  volume={71},
  pages={909 - 920}
}
  • Christoph Sträter, Andr'e Eckardt
  • Published 2016
  • Physics
  • Zeitschrift für Naturforschung A
  • Abstract We investigate multi-“photon” interband excitation processes in an optical lattice that is driven periodically in time by a modulation of the lattice depth. Assuming the system to be prepared in the lowest band, we compute the excitation spectrum numerically. Moreover, we estimate the effective coupling parameters for resonant interband excitation processes analytically, employing degenerate perturbation theory in Floquet space. We find that below a threshold driving strength… CONTINUE READING

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