Tunneling control and localization for Bose-Einstein condensates in a frequency modulated optical lattice
arXiv:0912.1241 · doi:10.1134/S1054660X10090410
Abstract
The similarity between matter waves in periodic potential and solid-state physics processes has triggered the interest in quantum simulation using Bose-Fermi ultracold gases in optical lattices. The present work evidences the similarity between electrons moving under the application of oscillating electromagnetic fields and matter waves experiencing an optical lattice modulated by a frequency difference, equivalent to a spatially shaken periodic potential. We demonstrate that the tunneling properties of a Bose-Einstein condensate in shaken periodic potentials can be precisely controlled. We take additional crucial steps towards future applications of this method by proving that the strong shaking of the optical lattice preserves the coherence of the matter wavefunction and that the shaking parameters can be changed adiabatically, even in the presence of interactions. We induce reversibly the quantum phase transition to the Mott insulator in a driven periodic potential.
Laser Physics (in press)
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- Parametric Instability Rates in Periodically-Driven Band Systems
- (Quasi)Periodic revivals in periodically driven interacting quantum systems
- Spatially-antisymmetric localization of matter wave in a bichromatic optical lattice
- Quantum Non-Demolition Detection of Polar Molecule Complexes: Dimers, Trimers, Tetramers
- Dynamic Stimulation of Quantum Coherence in Lattice Bosons
- Nonlinear dynamics of Rydberg-dressed Bose-Einstein condensates in a triple-well potential
- Floquet Spinor Bose Gases
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- Tunneling of polarized fermions in 3D double wells
- Engineering Frequency-dependent Superfluidity in Bose-Fermi Mixtures
- Coherence-induced quantum forces
- Resonantly enhanced coherence by laser-assisted tunneling