Magnetically tuned spin dynamics resonance

TL;DR

This paper reports the experimental observation of a magnetically tuned resonance in ultracold atomic gases, revealing how magnetic fields influence spin mixing dynamics and extending the validity of the single mode approximation.

Contribution

It provides new experimental insights into magnetic field effects on spin dynamics and demonstrates the extended applicability of the single mode approximation at high magnetic fields.

Findings

Magnetic field controls spin conversion in F=2 87Rb condensates.

Resonance phenomenon linked to spin mixing dynamics.

Single mode approximation validity is extended at high magnetic fields.

Abstract

We present the experimental observation of a magnetically tuned resonance phenomenon resulting from spin mixing dynamics of ultracold atomic gases. In particular we study the magnetic field dependence of spin conversion in F=2 87Rb spinor condensates in the crossover from interaction dominated to quadratic Zeeman dominated dynamics. We discuss the observed phenomenon in the framework of spin dynamics as well as matter wave four wave mixing. Furthermore we show that the validity range of the single mode approximation for spin dynamics is significantly extended in the regime of high magnetic field.