Collective Dipole Interaction in Atom Arrays and Ensembles

Collective dipole interaction has recently emerged as a powerful tool in controlling light-matter interactions. Ordered atomic arrays, in particular, enhance cooperative responses and are promising for applications in coherent control and quantum information. This thesis examines three distinct phenomena associated with collective dipole interactions. First, we study the recoil effects resulting from subradiant and superradiant emissions in sub-wavelength atom arrays. Second, we analyze the photon statistics of the emitted light in different directions and modes in the low-intensity regime. Finally, we explore the collective behavior of atoms confined near a nanophotonic micro-ring resonator, where the interplay of chiral cavity interactions and free space dipole-dipole coupling leads to novel subradiant and superradiant states.