Collective light-matter coupling, leading to enhanced transition rates and altered photon statistics, has many potential applications in future quantum technologies. Quantum dots are a promising solid-state platform for collective effects due to their excellent light emission properties. Recently, collective emission from up to three quantum dots has been observed experimentally [Grim et. al., Nat. Mater, 2019; Tiranov et. al., Science 2023].

As a solid-state platform, quantum dots suffer from spectral inhomogeneity, a low emitter density and decoherence, mainly due to lattice vibrations. Thus, a meticulous theoretical understanding of collective effects in noisy systems is needed to disambiguate different types of collective effects and to address questions about noise robustness.

This contribution presents a theoretical perspective on collective emission from quantum dots. I will introduce two distinct collective emission phenomena, namely measurement-induced collective emission and superradiance. Also, the impact of phonons, which are treated on the polaron master equation level, as well as utilizing state-of-the art process tensor methods, will be addressed [Wiercinski et. al. PRR 2023, Wiercinski et. al. PRR 2024].