New Quantum Systems with Cold Atoms: Dipolar Interactions and "Atomtronics"

Project funded by Swedish Research Council (Project grant), grant 2010-05069_VR. Participating organisations named by the source: Lund University. Funded amount: SEK 3,000,000, as stated by the source. Runs 2011-01-01 to 2014-12-31. Keywords: Oklassificerat, Unclassified. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2025-12-05); national funding data, not CORDIS. Abstract given by the source: Cold atomic (or molecular) quantum gases offer fascinating possibilities to discover new quantum phases of matter, having also potential to develop into versatile future quantum technologies. Our research sets focus on the few- and many-body physics of these new quantum systems, and analyzes their possible use for so-called ´atomtronic´ devices. We investigate how dipolar interactions and their spatial anisotropy are manifest in the quantum-mechanical properties of these systems. We study the emergence of shell structure in trapped fermion systems with weak interactions, and Wigner crystallization in the limit of strong dipolar and anisotropic forces between the (bosonic or fermionic) particles. For vertically stacked two-dimensional atom traps, the competition between inter-layer attraction and intra-layer repulsion gives rise to highly entangled quantum states. We also study the influence of the interaction anisotropy on persistent currents in ring-shaped trap geometries. Inspired by recent experiments with atom chips and atomic waveguides, we shall furthermore investigate the ´atom transport´ through quantum-dot-like atom traps. The combination of the configuration interaction method and the Lee-Suzuki transformation with quantum transport theory (for fermionic as well as for bosonic quantum systems) is a very challenging task. Once met, however, this new approach may allow investigating phenomena of correlated quantum systems that have so far been inaccessible.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Swedish Research Council. Retrieved 2026-10-22. Licence: Creative Commons Attribution 4.0 (OpenAIRE Graph). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: Creative Commons Attribution 4.0 (CC BY 4.0).

AI-assisted summary: The project "New Quantum Systems with Cold Atoms" is funded by the Swedish Research Council with a grant of SEK 3,000,000, running from January 1, 2011, to December 31, 2014, focusing on dipolar interactions in cold atomic quantum gases. Suggested technology pillar: simulation. Generated by AI from the public source text; it may contain errors and the original source is authoritative.