Lorenzo Graziotto is a postdoctoral fellow in the laboratory of Prof. James McIver at the Department of Physics of Columbia University. He received his PhD in Physics at ETH Zürich, where he worked in the Quantum Optoelectronics Group under the supervision of Prof. Jérôme Faist and Prof. Giacomo Scalari. Before that, he earned a BSc and an MSc from Sapienza University in Rome. His research interests focus on the interplay between light and matter in condensed matter systems. Specifically, in his PhD, he experimentally demonstrated how the vacuum fluctuations of the electromagnetic field can be used to manipulate the quantum Hall phases. Such phases emerge as a result of strong interactions between the electrons, where the behavior of the collective is different from that of its individual constituents. Investigating how the vacuum fluctuations can improve these phases is instrumental in understanding them and in the prospect of realizing novel quantum devices. Using electromagnetic cavities to modify material properties in van der Waals materials is the further goal of his postdoctoral research.