Spin-Orbit Coupling Induced Resonance in an Ultracold Bose Gas

TL;DR

This paper investigates how tuning spin-orbit coupling (SOC) strength in ultracold Bose and Fermi gases can induce resonances across multiple scattering channels, revealing a novel control mechanism for quantum interactions.

Contribution

It demonstrates that SOC strength tuning can induce resonances in both Bose and Fermi gases, extending control over scattering processes in ultracold quantum systems.

Findings

Resonances can be induced by tuning SOC strength.

Two-dimensional SOC induces resonances in two channels.

Three-dimensional SOC induces resonances in all channels.

Abstract

We study a two-component Bose gas with artificial spin-orbit coupling (SOC) which couples the center-of-mass momentum of atom to its internal states. We show that in this system resonance can be induced by tuning SOC strength. With a two-dimensional SOC, resonances in two scattering channels can be induced by tuning the aspect ratio of SOC strengths. With a three-dimensional SOC, resonance in all scattering channels can be induced by tuning the appropriate SOC strength. Similarly, we also find that in a Fermi gas with two- or three-dimensional SOC resonance can be induced by tuning SOC strength.