Resonant d-wave scattering in harmonic waveguides

TL;DR

This paper reports the observation and analysis of d-wave resonant scattering in ultracold bosons confined in harmonic waveguides, revealing a tunable transition from s-wave to d-wave interactions and enabling new studies of strongly correlated quantum gases.

Contribution

It demonstrates the emergence of d-wave resonances in quasi-1D systems and provides a scaling relation for their position, expanding control over higher partial wave interactions.

Findings

D-wave resonance appears as an imprint of 3D shape resonance in quasi-1D.

Resonance position can be tuned by adjusting trap frequency.

Ultracold scattering can be continuously tuned from s-wave to d-wave regimes.

Abstract

We observe and analyze d-wave resonant scattering of bosons in tightly confining harmonic waveguides. It is shown that the d-wave resonance emerges in the quasi-1D regime as an imprint of a 3D d-wave shape resonance. A scaling relation for the position of the d-wave resonance is provided. By changing the trap frequency, ultracold scattering can be continuously tuned from s-wave to d-wave resonant behavior. The effect can be utilized for the realization of ultracold atomic gases interacting via higher partial waves and opens a novel possibility for studying strongly correlated atomic systems beyond s-wave physics.