Light–matter interaction in the ultrastrong coupling regime is attracting considerable
attention owing to its applications to coherent control of material properties by a vacuum …

We study the quantum phase diagram and the onset of quantum critical phenomena in a
generalized Dicke model that includes collective qubit–qubit interactions. By employing …

Phase and amplitude modes, also called polariton modes, are emergent phenomena that
manifest across diverse physical systems, from condensed matter and particle physics to …

Two-level atoms coupled with single-mode cavity photons are predicted to exhibit a
quantum phase transition when the coupling strength exceeds a critical value, entering a …

Reaching strong light-matter coupling in solid-state systems has long been pursued for the
implementation of scalable quantum devices. Here, we put forward a system based on a …

Hybrid light–matter coupled states, or polaritons, in magnetic materials have attracted
significant attention due to their potential for enabling novel applications in spintronics and …

Due to the hybridization of charged excitons with cavity photons, trion polaritons in
microcavity semiconductors are a promising avenue for realizing strong polariton …

We study the frictional drag between two graphene layers placed inside a cavity. We show
that the drag has two contributions: the well-known Coulomb drag, and a novel photon …

Achieving strong coupling between light and matter excitations in hybrid systems is a
benchmark for the implementation of quantum technologies. We recently proposed …