Nonclassical atom and light sources for measurements below the standard quantum limit

这项实验研究计划将利用被磁捕获的原子样品与共振器模式的集体相互作用进行自旋压缩，以实现在标准量子极限下工作的Ramsey类型原子钟。此外，PI将演示一种用于单个量子化激发的全息量子存储器，并使用它来创建具有几个光子的光子福克态。这种光源可用于海森堡极限的光学光谱分析。最后，该小组将展示一个高保真、高亮度的窄带纠缠光子源。该项目的更广泛影响包括对学生的培训以及时钟和传感器的应用。

This experimental research program will use the collective interaction of a magnetically trapped atomic sample with a resonator mode for spin squeezing to realize a Ramsey type atomic clock operating below the standard quantum limit. In addition, the PI will demonstrate a holographic quantum memory for single quantized excitations, and use it to create photon Fock states with a few photons. Such a light source could be used for optical spectroscopy at the Heisenberg limit. Finally, the group will demonstrate a high fidelity, high-brightness source of narrowband, entangled photons. The broader impact of the program involves training of students as well as applications to clocks and sensors.