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  Effective Dirac dynamics of ultracold atoms in bichromatic optical lattices

Witthaut, D., Salger, T., Kling, S., Grossert, C., & Weitz, M. (2011). Effective Dirac dynamics of ultracold atoms in bichromatic optical lattices. Physical Review A, 84(3): 033601. doi:10.1103/PhysRevA.84.033601.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-1173-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-1174-E
Genre: Journal Article

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 Creators:
Witthaut, Dirk1, Author              
Salger, T., Author
Kling, S., Author
Grossert, C., Author
Weitz, M., 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: We study the dynamics of ultracold atoms in tailored bichromatic optical lattices. By tuning the lattice parameters, one can readily engineer the band structure and realize a Dirac point, i.e., a true crossing of two Bloch bands. The dynamics in the vicinity of such a crossing is described by the one-dimensional Dirac equation, which is rigorously shown beyond the tight-binding approximation. Within this framework we analyze the effects of an external potential and demonstrate numerically that it is possible to demonstrate Klein tunneling with current experimental setups.

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Language(s): eng - English
 Dates: 2011-09-01
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Method: Peer
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Title: Physical Review A
  Alternative Title : Phys. Rev. A
Source Genre: Journal
 Creator(s):
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Publ. Info: -
Pages: - Volume / Issue: 84 (3) Sequence Number: 033601 Start / End Page: - Identifier: -