本项目拟从理论上研究邻近电介质表面单个两能级原子量子真空作用对近场光力系统中光场和机械运动量子性质的操控。主要讨论当单原子距离微腔壁表面纳米尺度时，量子真空作用对原子能级和跃迁频率的调控以及对原子与腔倏逝场近场耦合的影响。进一步的，利用驱动光场对单原子激发态布居数进行调控，并使其量子真空力在特定距离时从吸引变为排斥，从而研究单原子在微腔壁附近稳定囚禁的实现。在此基础上，构建单原子近场强耦合微腔光力系统。相应的研究单原子及真空作用对近场光力系统动力学及腔内外光场性质的相干控制，以及研究单原子运动与微腔壁机械运动之间直接的强耦合实现及他们之间量子纠缠产生，分析单原子和系统色噪声对机械运动模式基态冷却的影响，探索机械振子位移在量子水平的压缩和测量，并给出系统中各量子特性优化参数。本项目研究对实现微腔光力系统单原子控制、量子真空力利用和探测以及近场光力学在量子信息处理中应用方面具有重要的研究价值。

The project studies theoretically the manipulation of the quantum vacuum action of a two-level atom near a dielectric surface on the quantum properties of the optical field and mechanical motion in a near-field optomechanical system. The main aim of the project is to study and discuss the control of the quantum vacuum action on the atomic level and transition frequency and the effect of the quantum vacuum action on the near-field coupling between a single-atom and cavity evanescent field when the distance between the single-atom and the surface of the micro-cavity wall is a nanoscale. Further, the realization of the steady trapping of the atom near the micro-cavity wall is investigated in detail by regulating the population of the excited state of the atom with the driving optical field and therefore controlling the quantum vacuum force from the attraction to repulsion at a special distance. On this basis, a model of single-atom micro-cavity optomechanical system with strong near-field coupling is established. Correspondingly, the project is to investigate the coherent control of single-atom and the vacuum action on the dynamics and the properties of the optical field inside and outside the cavity. The realization of the directed strong coupling between the single-atom motion and the mechanical motion of the cavity mirror and the generation of the quantum entanglement between them will be studied in detail, the effects of the single-atom and the color noise of the system on the ground-state cooling of a mechanical motion mode are analyzed importantly and the squeezing and measure of a mechanical oscillator’s displacement at the quantum level are explored. Finally, the optimal parameters of the various quantum properties in the system will be provided. The project has an important research value for realizing the control of the micro-cavity optomechanical system by a single-atom, the utilization and detection of the quantum vacuum force and the application of the near-field optomechanics in the quantum information process.