  We investigate two-dimensional atomic arrays as a platform to modify the
electromagnetic environment of individual quantum emitters. Specifically, we
demonstrate that control over emission linewidths, resonant frequency shifts,
and local enhancement of driving fields is possible due to strong dipole-dipole
interactions within ordered, subwavelength atom configurations. We demonstrate
that these effects can be used to dramatically enhance coherent dipole-dipole
interactions between distant quantum emitters within an atom array. Possible
experimental realizations and potential applications are discussed.
