SPICE Workshop on Quantum materials and quantum information science May 19th - 21st, 2026
Valla Fatemi
The recent Nobel Prize in Physics acknowledged the experimental determination that ‘macroscopic’ collective motion requires a quantum mechanical formulation. Indeed, superconducting quantum circuits are fundamentally based on collective plasma modes of metal films. Quantum materials may offer novel collective modes with new opportunities for their size, control, and basic character. In this talk, I will describe our new cavity-matter paradigm for combining 2d quantum materials with plasmonic cavities. Our approach combines ultracompact mode volumes and high quality factors in a format that is compatible with 2d quantum material heterostructures, resulting in observation of strong coupling between cavity plasma modes and graphene plasma modes. To measure these, we developed an experimental tool to achieve low power dynamical conductivity spectroscopy to the millimeter-wave band. Finally, I will conclude with an outlook on prospects for embedding quantum materials into our cavity testbed for probing of natural and hybrid collective modes in quantum materials.