Coherent heteronuclear spin dynamics in an ultracold spin-1 mixture

TL;DR

This paper reports the observation of coherent heteronuclear spin dynamics in an ultracold spin-1 mixture, revealing resonance behavior influenced by magnetic fields and demonstrating control via species-dependent light shifts, aligning with theoretical models.

Contribution

It provides the first experimental observation of coherent heteronuclear spin oscillations in an ultracold mixture and introduces a method to control these dynamics using light shifts.

Findings

Observation of periodical, correlated spin oscillations between species

Resonance behavior depending on magnetic field and spin interactions

Control of spin dynamics via species-dependent light shifts

Abstract

We report the observation of coherent heteronuclear spin dynamics driven by inter-species spin-spin interaction in an ultracold spinor mixture, which manifests as periodical and well correlated spin oscillations between two atomic species. In particular, we investigate the magnetic field dependence of the oscillations and find a resonance behavior which depends on {\em both} the linear and quadratic Zeeman effects and the spin-dependent interaction. We also demonstrate a unique knob for controlling the spin dynamics in the spinor mixture with species-dependent vector light shifts. Our finds are in agreement with theoretical simulations without any fitting parameters.