  We present a numerical exploration of the possibility of sustained
amplification of magnetic vortex gyration by controlling the relative
polarities of a coupled vortices in short vortex chains. First, we numerically
establish the asymmetry in gyration of a single vortex based on its polarity by
use of external magnetic field rotating at the gyrotropic frequency. This
phenomena can be used to design logical adapters if vortex core switching is
avoided. The criteria to obtain a good gyration amplitude ratio to easily
observe true or false output has been examined further. The cases of coupled
magnetic vortices and short vortex chains have been studied with different
polarity configurations to reveal other desirable aspects of vortex dynamics
including, but not limited to, highly efficient signal transfer. These findings
are important in applications for information signal processing.
