Floquet-engineering of nodal rings and nodal spheres and their characterization using the quantum metric

Abstract

This work proposes a scheme for realizing topological nodal defects in synthetic quantum matter. The approach builds on well-designed driving protocols, upon which a three dimensional Dirac cone expands into a nodal ring or a nodal sphere. Their geometric and topological features are described in terms of the quantum metric, which provides a measurable signature of these nodal defects. A possible experimental implementation of such Floquet-engineered nodal defects is discussed, together with a realistic detection scheme.

Topics & Concepts