Continuous, tunable control over transitions between quasiparticle-like topological states, for quantum computing, high-capacity optical networks

https://www.eurekalert.org/news-releases/1100921

"Poincaré sphere geometrics created/ manipulated nano-scale topological entities in soliton (skyrmion/ antiskyrmion, vortex) ferroelectric ultrathin films by tailoring laser's twist/ phase structure... laser beams ranging from Laguerre-Gaussian to Hermite-Gaussian modes imprint rich patterns onto ferroelectric films' polarization landscape... handedness control within trillionths of second... ultrafast, robust, smooth, entirely optical, unlike previous methods that often required complex electrical or mechanical manipulation"