Collective Quantum Manipulation and Cooling of Atoms in An Optical Resonator

该项目集中于与光学谐振腔强烈相互作用的原子样品的内部和外部自由度的集体操纵。与不同原子相关联的过程的不可分割性导致它们之间的纠缠，并且可以导致进入谐振器的强集体发射。提出了一种在原子钟跃迁中实现自旋压缩的方法。压缩态将读出噪声降低到低于标准量子极限的值，这将在光学谐振器内用两个铯原子样品进行实验证明。这些研究将阐明集体发射过程和光诱导力之间的关系。在最有利的情况下，集体发射诱导机制将提供一个新的工具来操纵极化粒子，并显着拓宽激光冷却和捕获技术的范围。拟议的工作将通过培训研究生，并通过让本科生参与研究工作的重要部分，将研究和教育目标结合起来。特别是对本科生来说，量子力学物体的实验第一手经验将提供一个重要的，激励和有益的教育组成部分。

This project concentrates on the collective manipulation of internal and external degrees of freedom of atomic samples interacting strongly with an optical resonator. The indistinguishability of the processes associated with different atoms leads to entanglement between them, and can result in strong collective emission into the resonator. A method is proposed to attain spin squeezing on an atomic clock transition. The squeezed state reduces the readout noise to a value below the standard quantum limit, as will be experimentally demonstrated with two samples of cesium atoms inside an optical resonator. These studies will elucidate the relation between collective emission processes and light-induced forces. In the most favorable case, the collective-emission-induced mechanism will provide a new tool for manipulating polarizable particles, and significantly broaden the scope of laser cooling and trapping techniques. The proposed work will unite research and educational goals by training graduate students, and by involving undergraduate students in significant parts of the research effort. Particularly for undergraduate students, experimental firsthand experience with quantum mechanical objects will provide an important, motivating and rewarding educational component.