Speaker: Bennet Windt
Affiliation: Max Planck Institute of Quantum Optics, Munich
Date: Tuesday, 10 February 2026 at 12:00
Location: Online seminar
I will present our recent work exploring a bosonic analogue of the Dicke model of superradiance. Specifically, we study a system of bosonic modes subject to fully symmetric collective decay and a uniform on-site interaction, which is naturally realised in waveguide-coupled transmon arrays. Exploiting the permutation symmetry of the problem, we combine perturbative arguments with large-scale numerical simulations to analyse the collective emission dynamics in the weak- and strong-interaction limits. In both regimes, we find that the dynamics are well captured by rate equations closely analogous to those of standard Dicke superradiance. Building on this understanding, I will present evidence for a crossover in the scaling of the peak emission rate with system size, from sub-quadratic to quadratic. If time permits, I will also discuss the dynamics of different initial states with no counterparts in the case of two-level emitters.