Paul Walker

Dr. Paul Walker is a Researcher in the Inorganic Semiconductors Research Cluster at the University of Sheffield's School of Mathematical and Physical Sciences. His work focuses on semiconductor physics, nonlinear optics, and quantum phenomena in microcavity systems. He investigates exciton-polaritons, spin-orbit coupling, and topological edge modes in 2D materials and photonic structures.

Research interests include polariton lasing, ultrafast nonlinear effects, and the development of van der Waals heterostructures for optoelectronics. His studies span GaAs-based systems, AlGaN quantum wells, and monolayer semiconductors like WSe₂, often operating at room temperature. Key applications involve ultra-low-power polariton devices and high-speed optical modulation.

Publications highlight advancements in polariton solitons, Zitterbewegung effects, and the interplay between spin textures and microcavity geometries. His work bridges condensed matter physics and nanophotonics, with contributions to both fundamental understanding and applied device concepts.