Manipulation of nonequilibrium spin dynamics of an ultracold gas in a moving optical lattice

TL;DR

This paper demonstrates how dynamic spatial evolutions in a moving optical lattice can control and tune the spin dynamics of an ultracold gas, advancing quantum simulation capabilities.

Contribution

It introduces a novel method to manipulate spin dynamics through spatial evolution, enabling programmable control in cold atom quantum simulators.

Findings

Spatial evolutions tune long-lived coherent spin dynamics.

Developed a model of quantum spin-mixing with spatially dependent interactions.

Opened pathways for simulating quantum spin models with tunable interactions.

Abstract

The isolation and control of disparate degrees of freedom underpin quantum simulators. We advance the programmability of cold atom quantum simulators with a first realization of the dynamic interplay of spatial and spin degrees of freedom. We experimentally demonstrate that violent spatial evolutions tune long-lived coherent spin dynamics and develop a model of quantum spin-mixing incorporating the spatial evolution via time-dependent spin-spin interactions. Our results open new paths towards the simulation of quantum spin models with tunable interactions via tailored spatial dynamics.