Chowdhury Avishek, Barbay Sylvain, Clerc Marcel G, Robert-Philip Isabelle, Braive Rémy
Centre de Nanosciences et de Nanotechnologies, CNRS, Univ. Paris-Sud, Université Paris-Saclay, C2N Marcoussis, 91460 Marcoussis, France.
Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile.
Phys Rev Lett. 2017 Dec 8;119(23):234101. doi: 10.1103/PhysRevLett.119.234101. Epub 2017 Dec 6.
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 nanoelectromechanical 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.
随机共振是一种通常在一维、振幅调制的双稳系统中观察到的普遍现象。我们通过证明由于添加相位噪声而增强了弱相位调制信号，从而在受迫纳米机电膜的二维响应中实验性地展示了相位随机共振的出现。基于一般的受迫杜芬振子模型，我们通过实验和理论证明相位噪声起乘法作用，会引发重要的物理后果。这些结果可能为纳米机械振荡器中的相位噪声计量或相干信号传输应用开辟有趣的前景。此外，我们的方法由于其通用性，可能适用于各种系统。
