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

这项实验研究计划将利用磁阱原子样品与用于自旋压缩的共振器模式的集体相互作用来实现在标准量子极限以下工作的Ramsey型原子钟。 此外，PI将展示单量子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Fock态。这样的光源可以用于海森堡极限的光谱学。最后，该小组将展示一个高保真度，高亮度的窄带纠缠光子源。该计划的更广泛影响涉及学生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.