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- W2788967030 startingPage "225001" @default.
- W2788967030 abstract "The nonequilibrium quantum dynamics of few boson ensembles which experience a spatially modulated interaction strength and are confined in finite optical lattices is investigated. We utilize a cosinusoidal spatially modulated effective interaction strength which is characterized by its wavevector, inhomogeneity amplitude, interaction offset and a phase. Performing quenches either on the wavevector or the phase of the interaction profile an enhanced imbalance of the interatomic repulsion between distinct spatial regions of the lattice is induced. Following both quench protocols triggers various tunneling channels and a rich excitation dynamics consisting of a breathing and a cradle mode. All modes are shown to be amplified for increasing inhomogeneity amplitude of the interaction strength. Especially the phase quench induces a directional transport enabling us to discern energetically, otherwise, degenerate tunneling pathways. Moreover, a periodic population transfer between distinct momenta for quenches of increasing wavevector is observed, while a directed occupation of higher momenta can be achieved following a phase quench. Finally, during the evolution regions of partial coherence are revealed between the predominantly occupied wells." @default.
- W2788967030 created "2018-03-06" @default.
- W2788967030 creator A5003983405 @default.
- W2788967030 creator A5024066159 @default.
- W2788967030 creator A5064525551 @default.
- W2788967030 date "2018-10-24" @default.
- W2788967030 modified "2023-10-03" @default.
- W2788967030 title "Quench dynamics of finite bosonic ensembles in optical lattices with spatially modulated interactions" @default.
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- W2788967030 doi "https://doi.org/10.1088/1361-6455/aae57a" @default.
- W2788967030 hasPublicationYear "2018" @default.
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