  Polaritons are quasiparticles resulting from strong quantum coupling of light
and matter. Peculiar properties of polaritons are a mixture of physics usually
restricted to one of these realms, making them interesting for study not only
from the fundamental point of view but also for applications. In recent years,
many studies have been devoted to the potential use of exciton-polaritons for
computing. Very recently, it has been shown experimentally that they can be
harnessed not only for digital computing, but also for optical neural networks
and for optimization related to hard computational problems. Here, we provide a
brief review of recent studies and most important results in this area. We
focus our attention in particular on the emerging concepts of non-von-Neumann
computing schemes and their realizations in exciton-polariton systems.
