Our research focuses on the optical and electronic properties of low-dimensional quantum materials, with a particular emphasis on size-dependent behavior, optical control, and the emergence of novel quantum phenomena. Using femtosecond pump–probe spectroscopy, we investigate the fundamental relaxation and transport dynamics of electrons, phonons, and their interactions across a broad frequency range from the ultraviolet to the terahertz. We also study artificially engineered structures designed to enhance light–matter interactions and enable control over the polarization, phase, and amplitude of THz radiation. Additionally, we are interested in polaritonic systems for manipulating infrared light at sub-diffractional scales.