Logical operations using excitable cavity solitons

The goal of this work is to discuss the potential of cavity solitons, in particular in a Kerr medium, in carrying out computations, i.e., not just for information storage. The key is the excitability exhibited by these cavity solitons. In particular, the paper show how to design logic gates with cavity solitons, namely the AND, OR and NOT gates, as by combination of them one can construct any logical operation. In this work cavity solitons are in the excitable regime, what implies that if suitably perturbed (i.e. with a superthreshold perturbation) elicit a excitable excursion. For computational purposes the presence of an excitable excursion as a bit ´1´ and the absence of the excursion as a bit ´0´ was considered.