Exceptional points in bichromatic Wannier-Stark systems

Elsen, C.; Rapedius, K.; Witthaut, Dirk; Korsch, H. J.

doi:10.1088/0953-4075/44/22/225301

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Exceptional points in bichromatic Wannier-Stark systems

MPS-Authors

/persons/resource/persons173709

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

Citation

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

Abstract

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.