Persistent Coherent Beating in Coupled Parametric Oscillators
The article published at Physical Review Letters Journal.
Coherent beating between oscillators is one of the most fundamental phenomena in physics, with the simplest example being a pair of coupled pendula. When two pendula are coupled, they coherently transfer energy between them. However, in real systems this behavior is transient and disappears in steady-state due to dissipation and non-linear interactions. The paper shows theoretically and experimentally that coupled parametric oscillators can exhibit persistent coherent beats even in steady-state. This behavior can have implications for networks of parametric oscillators and coherent systems in general.