Photonic Cavity Synchronization of Nanomechanical Oscillators
Photonic Cavity Synchronization of Nanomechanical Oscillators
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DOI：
10.1103/physrevlett.111.213902
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发表时间：
2013-11-21
影响因子：
8.6
通讯作者：
Tang, Hong X.
中科院分区：
文献类型：
--
作者：
Bagheri, Mahmood;Poot, Menno;Tang, Hong X.
振荡系统中的同步是一种常见的自然现象，并且正在成为现代物理学中的一个重要概念。纳米机械谐振器由于其可控振荡特性和可工程非线性而成为研究同步的理想系统。在这里，我们演示了通过光子谐振器实现两个纳米机械振荡器的同步，从而实现机械隔离的纳米机械谐振器之间的光机械同步。光学反作用会引起机械谐振器的电抗和耗散耦合，从而导致谐振器的相干振荡和互锁，其动力学超出了广泛接受的相位振荡器（Kuramoto）模型。除了振荡器之间的相位差之外，它们的幅度也被耦合，导致同步载波信号周围出现边带。
Synchronization in oscillatory systems is a frequent natural phenomenon and is becoming an important concept in modern physics. Nanomechanical resonators are ideal systems for studying synchronization due to their controllable oscillation properties and engineerable nonlinearities. Here we demonstrate synchronization of two nanomechanical oscillators via a photonic resonator, enabling optomechanical synchronization between mechanically isolated nanomechanical resonators. Optical backaction gives rise to both reactive and dissipative coupling of the mechanical resonators, leading to coherent oscillation and mutual locking of resonators with dynamics beyond the widely accepted phase oscillator (Kuramoto) model. In addition to the phase difference between the oscillators, also their amplitudes are coupled, resulting in the emergence of sidebands around the synchronized carrier signal.