3 papers
cond-mat.mtrl-sci2025
Equilibrium non-linear phononics by electric field fluctuations of terahertz cavities
Emil Viñas Boström, Marios H. Michael, Christian Eckhardt +1
Selective excitation of vibrational modes using strong laser pulses has emerged as a powerful material engineering paradigm. However, to realize deterministic control over material…
cond-mat.str-el2024
Surface-mediated ultra-strong cavity coupling of two-dimensional itinerant electrons
Christian J. Eckhardt, Andrey Grankin, Dante M. Kennes +5
Engineering phases of matter in cavities requires effective light-matter coupling strengths that are on the same order of magnitude as the bare system energetics, coined the ultra-…
cond-mat.str-el2024
Floquet engineering nearly flat bands through quantum-geometric light-matter coupling with surface polaritons
MikoÅaj Walicki, Christian J. Eckhardt, Michael A. Sentef
We investigate Floquet engineering in a sawtooth chain -- a minimal model hosting a nearly flat band endowed with nontrivial quantum geometry -- coupled to driven surface polariton…