自旋轨道耦合中子束的产生和检测
Generation and detection of spin-orbit coupled neutron beams
摘要：
光的自旋-轨道耦合在纳米光学和等离子体学中已经崭露头角，并且是拓扑光子学和手征量子光学的关键组成部分。我们展示了一个基本的工具，将类似的影响到中子光学：产生和检测的中子束与耦合的自旋和轨道角动量。$^3$ He中子自旋过滤器与特定取向的三角形线圈一起使用，以制备具有自旋-轨道相关晶格的中子束，正如其自旋相关强度分布所示。这些相关性可以针对特定的应用，如拓扑材料的中子研究。
英文摘要：
Spin-orbit coupling of light has come to the fore in nano-optics and plasmonics, and is a key ingredient of topological photonics and chiral quantum optics. We demonstrate a basic tool for incorporating analogous effects into neutron optics: the generation and detection of neutron beams with coupled spin and orbital angular momentum. $^3$He neutron spin-filters are used in conjunction with specifically oriented triangular coils to prepare neutron beams with lattices of spin-orbit correlations, as demonstrated by their spin-dependant intensity profiles. These correlations can be tailored to particular applications, such as neutron studies of topological materials.
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