Observation of Density-Induced Tunneling
arXiv:1407.0835 · doi:10.1103/PhysRevLett.113.193003
Abstract
We study the dynamics of bosonic atoms in a tilted one-dimensional optical lattice and report on the first direct observation of density-induced tunneling. We show that the interaction affects the time evolution of the doublon oscillation via density-induced tunneling and pinpoint its density- and interaction-dependence. The experimental data for different lattice depths are in good agreement with our theoretical model. Furthermore, resonances caused by second-order tunneling processes are studied, where the density-induced tunneling breaks the symmetric behavior for attractive and repulsive interactions predicted by the Hubbard model.
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References in corpus (5)
- Bose-Fermi Mixtures in a Three-dimensional Optical Lattice
- Localization of bosonic atoms by fermionic impurities in a 3d optical lattice
- Role of interactions in 87Rb-40K Bose-Fermi mixtures in a 3d optical lattice
- Extended Bose Hubbard model of interacting bosonic atoms in optical lattices: from superfluidity to density waves
- Self-Trapping of Bosons and Fermions in Optical Lattices
Cited by in corpus (8)
- Non-standard Hubbard models in optical lattices: a review
- Transverse collisional instabilities of a Bose-Einstein condensate in a driven one-dimensional lattice
- Twonniers: Interaction-induced effects on Bose-Hubbard parameters
- Extended Bose-Hubbard model with pair tunneling: spontaneous symmetry breaking, effective ground state and fragmentation
- Beyond mean-field study of a binary bosonic mixture in a state-dependent honeycomb lattice
- The role of density-dependent magnon hopping and magnon-magnon repulsion in ferrimagnetic spin-(1/2, ) chains in a magnetic field
- Resonant enhancement of thermoelectric properties by correlated hopping for the Falicov-Kimball model on Bethe lattice
- Thermoelectric properties of Mott insulator with correlated hopping at microdoping