Work

Density-Dependent Synthetic Gauge Fields Using Periodically Modulated Interactions

Year: 2014

Type: article

Abstract: We show that density-dependent synthetic gauge fields may be engineered by combining periodically modulated interactions and Raman-assisted hopping in spin-dependent optical lattices. These fields lead to a density-dependent shift of the momentum distribution, may induce superfluid-to-Mott insulator transitions, and strongly modify correlations in the superfluid regime. We show that the interplay between the created gauge field and the broken sublattice symmetry results, as well, in an intriguing behavior at vanishing interactions, characterized by the appearance of a fractional Mott insulator.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.113.215303

Authors: S. Greschner, G. Sun, D. Poletti, L. Santos

Institutions: Leibniz University Hannover, Centre National de la Recherche Scientifique, Singapore University of Technology and Design, UMI MajuLab

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Deutsche Forschungsgemeinschaft, Singapore University of Technology and Design

Awards: G1112950532, G2782829552