Expansion dynamics of a dipolar Bose-Einstein condensate

TL;DR

This paper presents a theoretical and experimental study of the expansion dynamics of a dipolar Bose-Einstein condensate, demonstrating good agreement between measurements and hydrodynamic equations, and providing a versatile tool for analyzing dipolar quantum gases.

Contribution

It introduces a detailed theoretical method to interpret expansion measurements of dipolar Bose-Einstein condensates and applies it to experimental data.

Findings

Experimental measurements agree with hydrodynamic theory.

Theoretical framework aids in understanding dipolar condensate dynamics.

Method can be used for various time-dependent trap configurations.

Abstract

Our recent measurements on the expansion of a chromium dipolar condensate after release from an optical trapping potential are in good agreement with an exact solution of the hydrodynamic equations for dipolar Bose gases. We report here the theoretical method used to interpret the measurement data as well as more details of the experiment and its analysis. The theory reported here is a tool for the investigation of different dynamical situations in time-dependent harmonic traps.