Monolayer transition metal dichalcogenides (TMDs) have been predicted to host Floquet topological insulator states which are of interest to next generation electronic devices. Using ultrafast lasers to periodically drive TMD transitions, we hope to identify evidence of the phase transition between trivial and topological. Here, we investigate a phenomenological simulation of a blue detuned perturbation on a two-level system, based on the Optical Bloch equations and density matrix formalism. The results of such should help to differentiate effects such as populated states, renormalisation, and the Stark Shift, enabling clear identification of a topologically trivial to a Floquet topologically insulating phase transition.About the presenter
Jack Muir is a PhD student working with Assoc Prof Jeffrey Davis’ ultrafast spectroscopy group at Swinburne FLEET node, contributing to Research Theme 2. In his project, Jack aims to explore the ultrafast dynamics of two-dimensional transition metal dichalcogenide van der Waals heterostructures, with a particular interest in the effects of Moire potentials.