Exciting Moiré Materials for Quantum Light and Matter

Exciting Moiré Materials for Quantum Light and Matter

In this talk, Prof. Ajit Srivastava will be talking about Atomically thin semiconducting transition metal dichalcogenides (sTMDs) like WSe₂ and WS₂ are revolutionizing materials physics, enabling the study of emergent quantum phases through engineered heterostructures. Moiré heterostructures enhance Coulomb interactions and reduce kinetic energy, creating a platform for strongly correlated electronic and optical phenomena. In this talk, he will present his recent discovery of many-body interaction-induced ferroelectric ordering of moiré excitons in H-stacked WSe₂/WS₂ heterobilayers. Strong exciton-exciton repulsion leads to an excitonic Mott state, with time-resolved photoluminescence revealing signatures of ferroelectric ordering. This novel cooperative phenomenon opens pathways to exploring correlated quantum phases and uncovering exotic light-matter interactions in driven-dissipative systems.