腔与机械振子复合系统的量子特性及其在高灵敏度测量技术中的应用

The hybrid system of cavity and mechanical oscillator with its apparent peculiar quantum phenomenon is a focal point of research in quantum physics and laser physics. Cavity technology continues to improve, the experiment has been achieved for the coherent coupling between the cavity mode and mechanical oscillator. In this context, we propose this project- - - the quantum feature of the hybrid system of the cavity and mechanical oscillator and its application on high-sensitivity measurement techniques. The main contents of this project are as follows: the development of the quantum theory for effective interaction between cavity photons and mechanical oscillator; exploring the nonliner process with cavity and the mechanical oscillator; study of the macroscopic quantum phenomena with the coherent coupling of mechanical oscillator and photons under the quantum amplification effect of the cavity; investigating the non-classical state preparation with the coherent coupling of cavity mode and mechanical oscillator; developing the technique for the highly sensitive detection of displacement and the tiny force.

腔与机械振子复合系统的相互作用过程及其显现出来的奇特量子现象是当今量子物理和激光物理交叉学科新的研究前沿热点。随着腔技术的不断提高，实验上已经实现了腔模和机械振子之间的相干耦合。据于此，我们将开展腔和机械振子复合系统的量子特性及其在高灵敏度测量技术中应用的研究。其主要内容是：发展腔中光子与机械振子相互作用的量子理论；探讨腔场和机械振子的非线性过程；探索在腔的量子放大效应下机械振子和光子、原子等相干耦合而出现的宏观量子现象；利用腔模和机械振子的相干耦合探寻腔中机械振子非经典态的制备和调控；研究并提出基于腔和机械振子的高灵敏位移和微小力检测技术。

开展基于腔和机械振子系统的量子相干现象及其在量子测量和量子信息中的运用是目前量子调控研究的一个重要方向。本项目研究了腔和机械振子系统单量子传输特性及其相干控制，主要在量子存储，单光子源和多光子的非经典态的制备，以及单光子测量等方面取得了一些进展。