  The parametron, a resonator-based logic device, is a promising physical
platform for emerging computational paradigms. When the parametron is subject
to both parametric pumping and external driving, complex phenomena arise that
can be harvested for applications. In this paper, we experimentally demonstrate
deterministic phase switching of a parametron by applying frequency tuning
pulses. To our surprise, we find different regimes of phase switching due to
the interplay between a parametric pump and an external drive. We provide full
modeling of our device with numerical simulations and find excellent agreement
between model and measurements. Our result opens up new possibilities for fast
and robust logic operations within large-scale parametron architectures.
