  Recent experimental work has demonstrated the ability to achieve
reconfigurable photon localization in lossy photonic lattices by continuously
driving them with lasers strategically positioned at specific locations. This
localization results from the perfect, destructive interference of light
emitted from different positions and, because of that, occurs only at very
specific frequencies. Here, we examine this localization regime in the presence
of standard optical Kerr non-linearities, such as those found in polaritonic
lattices, and show that they stabilize driven-dissipative localization across
frequency ranges significantly broader than those observed in the linear
regime. Moreover, we demonstrate that, contrary to intuition, in most
siutations this driven-dissipative localization does not enhance non-linear
effects like optical bistabilities, due to a concurrent reduction in overall
intensities. Nevertheless, we are able to identify certain parameter regions
where non-linear enhancement is achieved, corresponding to situations where
emission from different spots constructively interferes.
