Resonant Spin Exchange between Heteronuclear Atoms Assisted by Periodic Driving

TL;DR

This paper introduces a method to induce resonant spin exchange between heteronuclear atoms with unmatched levels using periodic driving, enabling control over spin interactions in ultracold quantum gases.

Contribution

It presents a general scheme for resonant spin exchange via periodic driving and provides analytical results for heteronuclear atom systems, applicable to various ultracold atomic mixtures.

Findings

Analytical expression for effective spin exchange interaction strength.

Demonstration of resonant spin exchange in Na-Rb atomic mixtures.

Potential applications in controlling quantum gas spin dynamics.

Abstract

We propose a general scheme for inducing resonant exchange between spins or pseudo-spins of unmatched levels via periodic driving. The basic idea is illustrated for a system of two heteronuclear atoms, for which analytical results are provided for the effective spin exchange (SE) interaction strength. It is then applied to the mixture of 23Na and 87Rb atoms with a radio-frequency (rf) or microwave field near-resonant to the mismatched Zeeman level spacings. SE interaction engineered this way is applicable to ultracold quantum gas mixtures involving spinor Bose-Bose, Bose-Fermi, and Fermi-Fermi atoms.