Exploiting the local polarization of strongly confined light for sub-micrometer-resolution internal state preparation and manipulation of cold atoms
Exploiting the local polarization of strongly confined light for sub-micrometer-resolution internal state preparation and manipulation of cold atoms
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DOI：
10.1103/physreva.89.063829
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发表时间：
2014-06-30
影响因子：
2.9
通讯作者：
Rauschenbeutel, A.
中科院分区：
文献类型：
--
作者：
Mitsch, R.;Sayrin, C.;Rauschenbeutel, A.
强约束光场必然表现出在亚波长范围内变化的局部偏振。我们证明，这种单一光学模式可用于选择性地同时操纵原子系综，这些原子系综彼此之间的距离小于一微米，并且同等地耦合到光场。该技术是通过光学纳米纤维实现的，该纤维在强引导光学模式和两个铯原子直径线性阵列之间提供渐逝场接口。使用这种单一光学模式，两个原子系综可以同时被光学泵浦到相反的塞曼态。此外，状态相关的光移可以局部不同，从而实现两个系综的独立相干操纵。我们的研究结果为纳米级量子光学系统中原子样品的高级操作开辟了一条道路。
A strongly confined light field necessarily exhibits a local polarization that varies on a subwavelength scale. We demonstrate that a single optical mode of this kind can be used to selectively and simultaneously manipulate atomic ensembles that are less than a micron away from each other and equally coupled to the light field. The technique is implemented with an optical nanofiber that provides an evanescent field interface between a strongly guided optical mode and two diametric linear arrays of cesium atoms. Using this single optical mode, the two atomic ensembles can simultaneously be optically pumped to opposite Zeeman states. Moreover, the state-dependent light shifts can be made locally distinct, thereby enabling an independent coherent manipulation of the two ensembles. Our results open a route toward advanced manipulation of atomic samples in nanoscale quantum optics systems.