Pairing of electro-magnetic bosons under spin-orbit coupling

TL;DR

This paper explores how spin-orbit coupling affects pairing of light-matter bosons in 2D semiconductors, revealing phenomena like dynamical broadening, Feshbach resonances, and quantum halos with angular momentum.

Contribution

It introduces the effects of spin-orbit coupling on bosonic pairing, including the emergence of d-wave-like states and quantum halos, which are novel insights in this context.

Findings

Spin-orbit coupling induces dynamical broadening of two-body bound states.

Application of magnetic fields reveals Feshbach resonance phenomena.

Prediction of quantum bosonic halos with angular momentum L=2.

Abstract

We discuss pairing of light-matter bosons under effective spin-orbit (SO) coupling in two-dimensional semiconductors. The SO coupling is shown to induce dynamical broadening of a two-body bound state. Application of a transverse magnetic field yields the rich Feshbach resonance phenomenology. We predict quantum bosonic halos with a synthetic angular momentum L=2. The d-wave-like dressing of the nominally s-wave bound state is induced by SO coupling to the continuum in the open channel. The fundamental properties of the emergent quantum number remain to be explored.