Work

Topological quantum floating phase of dipolar bosons in an optical ladder

Year: 2025

Type: article

Abstract: Ultracold dipolar hard-core bosons in optical ladders provide exciting possibilities for the quantum simulation of anisotropic spin ladders. We show that introducing a tilt along the rungs results in a rich phase diagram at unit rung filling. In particular, for a sufficiently strong dipolar strength, the interplay between the long-range tail of the dipolar interactions and the tilting leads to the emergence of a quantum floating phase, a critical phase with incommensurate density-density correlations. Interestingly, the floating phase is topological, constituting an intermediate gapless stage in the melting of a crystal into a gapped topological Haldane phase. This novel scenario for topological floating phases in dipolar spin ladders can be investigated in ongoing experiments.

Source: Physical Review A

DOI: 10.1103/lhfx-c4xr

Authors: Henning Korbmacher, Gustavo A. Domínguez-Castro, Mateusz Łącki, Jakub Zakrzewski, Luis Santos

Institutions: Leibniz University Hannover, Jagiellonian University

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: hybrid

Estimated APC paid: $2,675

Funders: Deutsche Forschungsgemeinschaft, Narodowe Centrum Nauki, Infrastruktura PL-Grid, Academic Computer Centre Cyfronet, AGH University of Science and Technology