Dynamics of Weakly Interacting Bosons in Optical Lattices with Flux

Simple item page
dc.citation.issue5
dc.citation.rankM21
dc.citation.spage053625
dc.citation.volume98
dc.contributor.authorHudomal, Ana
dc.contributor.authorVasić, Ivana
dc.contributor.authorBuljan, Hrvoje
dc.contributor.authorHofstetter, Walter
dc.contributor.authorBalaž, Antun
dc.date.accessioned2024-06-28T11:45:33Z
dc.date.available2024-06-28T11:45:33Z
dc.date.issued2018-11-26
dc.description.abstractRealization of strong synthetic magnetic fields in driven optical lattices has enabled implementation of topological bands in cold-atom setups. A milestone has been reached by a recent measurement of a finite Chern number based on the dynamics of incoherent bosonic atoms. The measurements of the quantum Hall effect in semiconductors are related to the Chern-number measurement in a cold-atom setup; however, the design and complexity of the two types of measurements are quite different. Motivated by these recent developments, we investigate the dynamics of weakly interacting incoherent bosons in a two-dimensional driven optical lattice exposed to an external force, which provides a direct probe of the Chern number. We consider a realistic driving protocol in the regime of high driving frequency and focus on the role of weak repulsive interactions. We find that interactions lead to the redistribution of atoms over topological bands both through the conversion of interaction energy into kinetic energy during the expansion of the atomic cloud and due to an additional heating. Remarkably, we observe that the moderate atomic repulsion facilitates the measurement by flattening the distribution of atoms in the quasimomentum space. Our results also show that weak interactions can suppress the contribution of some higher-order nontopological terms in favor of the topological part of the effective model.
dc.identifier.doi10.1103/physreva.98.053625
dc.identifier.issn2469-9926
dc.identifier.issn2469-9934
dc.identifier.scopus2-s2.0-85057569834
dc.identifier.urihttps://pub.ipb.ac.rs/handle/123456789/155
dc.identifier.wos000451329500031
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.ispartofPhysical Review A
dc.relation.ispartofabbrPhys. Rev. A
dc.rightsrestrictedAccess
dc.titleDynamics of Weakly Interacting Bosons in Optical Lattices with Flux
dc.typeArticle
dc.type.versionpublishedVersion
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
PhysRevA.98.053625.pdf
Size:
4.43 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Publications