Work

Cooling a strongly interacting quantum gas by interaction modulation

Year: 2025

Type: article

Abstract: We present a cooling method for a strongly-interacting trapped quantum gas. By applying a magnetic field modulation with frequencies close to the binding energy of a molecular bound state we selectively remove dimers with high kinetic energy from the sample. We demonstrate cooling of the sample over a wide range of interaction strengths and measure a high cooling efficiency of $γ=4$ that exceeds all previous cooling near Feshbach resonances.

Source: Physical Review A

DOI: 10.1103/rvt9-hkll

Authors: D. Eberz, A. Kell, M. Breyer, M. Köhl

Institution: University of Bonn

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

Funder: Deutsche Forschungsgemeinschaft

Award: G1313477796