Work

Dynamics of a mobile ion in a Bose–Einstein condensate

Year: 2026

Type: article

Abstract: Characterization of the dynamics of an impurity immersed in a quantum medium is vital for fundamental understanding of matter as well as applications in modern day quantum technologies. The case of long-ranged interactions is of particular importance here, as it opens the possibility to leverage quantum correlations in controlling the system properties. Here, we consider a charged impurity moving in a bosonic gas and study its properties out of equilibrium. We extract the stationary momentum of the ion at long times, which is nonzero due to the superfluid nature of the medium, and the effective mass which stems from dressing the impurity with the host atoms. The nonlinear evolution leads not only to emission of density waves, but also momentum transfer back to the ion, resulting in the possibility of oscillatory dynamics.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/ae34dc

Authors: Piotr Wysocki, Marek Tylutki, Krzysztof Jachymski

Institutions: University of Warsaw, Warsaw University of Technology, Wrocław University of Science and Technology

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: gold

Estimated APC paid: $2,610

Funders: Narodowe Centrum Nauki, Narodowym Centrum Nauki