Surface plasmons can be Poincaré engineered to dress proximate materials via Floquet mechanism and encode quantum information on the nano-femto scales.
Poincaré Engineering
Topological Plasmons
Pseudospin vectors of collective excitations, such as plasmon and phonon polaritons, can be structured to possess topological textures, such as those of skyrmions and merons.
Many-body interactions in condensed matter give rise to a variety of quantum phenomena, such as Belgian waffle polarons. Understanding thier nano-femto dynamics is the key to ultrafast-ultrasmall semiconductor devices.
Excited State
Many-body Interactions
Many-body Interactions
Structured light sources can be employed in pump-probe optical and photoemission electron spectromicroscopies to offer unprecendented chances in detecting exotic quantum many-body interactions.
Structured-light Spectromicroscopy
About Us
The NanoFemto Dynamics group is directed by Dr. Yanan Dai in the department of physics, Southern University of Science and Technology. Our research aims to understand how structured light and polariton fields interact with low dimensional materials, and how they can engineer exotic nonequilibrium quantum phases of matter. i.e. Poinacré engineering, on the nanometer and femtosecond (nanofemto) spatiotemporal scales. To probe the nanofemto dynamics of excited quantum mater, we develop laser-based ultrafast (phase-resolved) optical, and photoemission electron spectromicroscopy techniques that allow <10 nm spatial resolution and ~100 attosecond temporal accuracy.