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  Exceptional points in bichromatic Wannier-Stark systems

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.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-1157-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-1158-E
Genre: Journal Article

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 Creators:
Elsen, C., Author
Rapedius, K., Author
Witthaut, Dirk1, Author              
Korsch, H. J., Author
Affiliations:
1Max Planck Research Group Network Dynamics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063295              

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 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.

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Language(s): eng - English
 Dates: 2011-10-25
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 629967
DOI: 10.1088/0953-4075/44/22/225301
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Title: Journal of Physics B: Atomic, Molecular and Optical Physics
  Alternative Title : J. Phys. B: At. Mol. Opt. Phys
Source Genre: Journal
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Pages: - Volume / Issue: 44 (22) Sequence Number: 225301 Start / End Page: - Identifier: -