Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Exceptional points in bichromatic Wannier-Stark systems


Witthaut,  Dirk
Max Planck Research Group Network Dynamics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Elsen, C., Rapedius, K., Witthaut, D., & Korsch, H. J. (2011). Exceptional points in bichromatic Wannier-Stark systems. Journal of Physics B: Atomic, Molecular and Optical Physics, 44(22): 225301. doi:10.1088/0953-4075/44/22/225301.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-1157-0
The resonance spectrum of a tilted periodic quantum system for a bichromatic periodic potential is investigated. For such a bichromatic Wannier–Stark system, exceptional points, degeneracies of the spectrum, can be localized in parameter space by means of an efficient method for computing resonances. Berry phases and Petermann factors are analysed. Finally, the influence of a nonlinearity of the Gross–Pitaevskii type on the resonance crossing scenario is briefly discussed.