Studying collective effects in 3D waveguide QED with frequency and time-domain resolved spectroscopy

Collective behavior of coupled quantum emitters has been studied extensively theoretically starting from seminal Dicke’s paper. Experimentally however many of the theoretical predictions have never been checked since it requires sophisticated experimental techniques. The recently appeared platform of 3D cQED offers unique opportunities in controlling independent qubits and their respective couplings control as well as long coherence times. We experimentally realized a system, which allows to investigate frequency chirping in a Dicke physics model, as well as to study cooperative behavior against collective noise and parameters spread. We study the system dynamics in frequency, as well as time-domain and compare it to theoretical predictions.