Abstract

We propose a scalable scheme to generate quadrature-squeezed state of multi-mechanical-modes in a cavity embedded with an atomic ensemble by exerting a driving field with the form of amplitude periodic modulation on the cavity. Using the methods of covariance analysis and numerical simulations, we show that the multi-mechanical-modes can be simultaneously squeezed in one quadrature (momentum or position) in unresolved-sideband regime, and the squeezed degree can be further deepened due to the introduction of atomic ensemble and periodic modulation. Squeezing competition exists between different mechanical modes according to the optomechanical coupling strength, hence the mechanical squeezing can be adjusted by optomechanical coupling strength within a certain range. Moreover, the more the number of mechanical modes, the lower the squeezing degree of each oscillator.

Graphical abstract

中文翻译：

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基于幅度调制的混合光机系统中多机模的同时压缩

摘要

我们提出了一种可扩展方案，通过在腔体上施加振幅周期调制形式的驱动场，在嵌入原子团的腔体中生成多机械模的正交压缩状态。使用协方差分析和数值模拟的方法，我们表明，多机械模式可以在未解析的边带状态下同时压缩为一个正交（动量或位置），并且由于引入了原子集合和周期调制。根据光机耦合强度，不同的机械模式之间存在挤压竞争，因此可以通过在一定范围内的光机耦合强度来调节机械挤压。而且，机械模式的数量越多，

图形概要