Fractional photon-assisted tunneling of ultra-cold atoms in periodically shaken double-well lattices

M. Esmann, J.D. Pritchard, C. Weiss

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Fractional photon-assisted tunneling is investigated both numerically and analytically in a double-well lattice. While integer photon-assisted tunneling is a single-particle effect, fractional photon-assisted tunneling is an interaction-induced many-body effect. Double-well lattices with few particles in each double well are ideal to study this effect far from the mean-field effects. It is predicted that the 1/4-resonance is observable in such systems. Fractional photon-assisted tunneling provides a physically relevant model, for which N-th order time-dependent perturbation theory can be large although all previous orders are small. All predicted effects will be observable with an existing experimental setup [1].

Original languageEnglish
Pages (from-to)160-168
Number of pages9
JournalLaser Physics Letters
Volume9
Issue number2
Early online date10 Nov 2011
DOIs
Publication statusPublished - Feb 2012

Keywords

  • double-well lattice
  • photon-assisted tunneling
  • ultra-cold atoms

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