Optomechanical Stochastic Resonance in a Macroscopic Torsion Oscillator

Details Optomechanical Stochastic Resonance in a Macroscopic Torsion Oscillator Optomechanical Stochastic Resonance in a Macroscopic Torsion Oscillator

2008-10-02

arxiv.org/abs/0810.0373v1

Physics

Optics

4 pages (double column), 3 figures

Scientific paper

10.1103/PhysRevA.79.031804

Linear mechanical oscillators have been applied to measure very small forces, mostly with the help of noise suppression. In contrast, adding noise to non-linear oscillators can improve the measurement conditions. Here, this effect of stochastic resonance is demonstrated in a macroscopic torsion oscillator, for an optomechanical non-linear potential. The signal output is enhanced for a sub-threshold electronic signal. This non-linear oscillator serves as a model system for the enhancement of signal-to-noise ratio in high precision optomechanical experiments.

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