Phase Stochastic Resonance in a forced nano-electromechanical oscillator

TL;DR

This paper demonstrates phase stochastic resonance in a nano-electromechanical oscillator, showing how phase noise can enhance weak phase signals, with implications for nanomechanical signal processing.

Contribution

It provides the first experimental observation of phase stochastic resonance in a nano-electromechanical system, supported by a theoretical model based on a forced Duffing oscillator.

Findings

Phase noise enhances weak phase signals in the oscillator.

Experimental and theoretical evidence of phase stochastic resonance.

Potential applications in nanomechanical phase noise metrology.

Abstract

Stochastic resonance is a general phenomenon usually observed in one-dimensional, amplitude modulated, bistable systems.We show experimentally the emergence of phase stochastic resonance in the bidimensional response of a forced nano-electromechanical membrane by evidencing the enhancement of a weak phase modulated signal thanks to the addition of phase noise. Based on a general forced Duffing oscillator model, we demonstrate experimentally and theoretically that phase noise acts multiplicatively inducing important physical consequences. These results may open interesting prospects for phase noise metrology or coherent signal transmission applications in nanomechanical oscillators. Moreover, our approach, due to its general character, may apply to various systems.