Inducing transport in a dissipation-free lattice with super Bloch oscillations

Elmar Haller, R. Hart, M.J. Mark, J.G. Danzl, L. Reichsoellner, H.-C. Naegerl

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Abstract

Particles in a perfect lattice potential perform Bloch oscillations when subject to a constant force, leading to localization and preventing conductivity. For a weakly interacting Bose-Einstein condensate of Cs atoms, we observe giant center-of-mass oscillations in position space with a displacement across hundreds of lattice sites when we add a periodic modulation to the force near the Bloch frequency. We study the dependence of these "super" Bloch oscillations on lattice depth, modulation amplitude, and modulation frequency and show that they provide a means to induce linear transport in a dissipation-free lattice.

Original languageEnglish
Article number200403
Number of pages4
JournalPhysical Review Letters
Volume104
Issue number20
DOIs
Publication statusPublished - 21 May 2010

Keywords

  • Bloch oscillations
  • dissipation-free lattice
  • Bloch frequency

Cite this

Haller, E., Hart, R., Mark, M. J., Danzl, J. G., Reichsoellner, L., & Naegerl, H-C. (2010). Inducing transport in a dissipation-free lattice with super Bloch oscillations. Physical Review Letters, 104(20), [200403]. https://doi.org/10.1103/PhysRevLett.104.200403