光力系统(optomechanics)是国际上最近一个受广泛关注的研究方向。 它在基础理论如宏观纠缠和实际应用如重力波探测等方面都起着十分重要的作用。 本项目提出利用在共振腔中外加光学克尔介质，调控杂化光力系统的纠缠和压缩等量子特性。在本项目中，基于腔-玻色爱因斯坦凝聚系统与光力系统的等效性，我们将在已有工作的基础上研究克尔介质对腔-玻色爱因斯坦凝聚系统的双稳态，能带结构和纠缠等特性的调控作用，以及克尔介质对一般光压耦合光力系统和腔场-冷原子-机械振子杂化光力系统的纠缠和压缩等量子特性的调控作用。 本项目不但对理解超越微观层次的量子现象具有重要的科学意义，而且也对将来制造可控性量子器件有重要的参考价值。

Optomechanics has attracted considerable attentation in recent years. It plays a key role in the basic theroy such as the macroscopic entanglement and application such as the detectation of the gravational wave. This proposal suggests that by placing an additional Kerr medium in the cavity, the quantum properties of optomechanics, such as entanglement or squeezeing, can be coherently controlled. In this project, inspired the equivalence between optomechanic and cavity Bose-Einstein condensate, we will study the effect of Kerr interaction on the bistability, the structur of energy band, and the entanglement of the cavity Bose-Enistein condensate. We will also study the effect of Kerr interaction on the quantum properties, especial entanglement and squeezing, of a usual optomechaics and a hybrid optomechanics composed by cavity, cold atoms, and a mechaical resonator. This project not only is meanful to understand the quantumness beyond the microscopoic level, but also helpful to fabricate the controllable quantum devices in future.