The photonic spin Hall effect (PSHE), as an exotic analogy to the spin Hall effect in electronics, is induced by the spin-orbit interaction of light and manifests itself as a spin-related splitting of left- and right-handed circularly polarized beams. Recently, the PSHE has been revealed and explored in a wide range of fields such as optical interfaces, metasurfaces/metamaterials, near-field optics, topological and disordered systems, as well as non-Hermitian photonics. Significantly, the PSHE provides the unique spin degrees of freedom to flexibly control light, which has enabled tremendous applications in precise metrology, spin-based nanophotonic devices, and mathematical operations, to name only a few. Also, new methods to manipulate and enhance this effect have been actively pursued. Here, we provide a comprehensive review of the key aspects in the PSHE, especially the underlying physics, new techniques of manipulations, and emerging applications. Our review can not only help new researchers of this field in a timely manner but also inspire more efforts in making and engineering PSHE-based devices in coming years.

光子自旋霍尔效应(PSHE) 是电子学中自旋霍尔效应的一种奇特类比，是由光的自旋轨道相互作用引起的，表现为左旋和右旋圆偏振光束的自旋相关分裂。最近，PSHE在光学界面、超表面/超材料、近场光学、拓扑和无序系统以及非厄米光子学等广泛领域得到了揭示和探索。值得注意的是，PSHE 提供了独特的自旋自由度来灵活地控制光，这在精密计量、基于自旋的纳米光子器件和数学运算等领域实现了巨大的应用。此外，人们也在积极寻求操纵和增强这种效应的新方法。在这里，我们对 PSHE 的关键方面进行了全面的回顾，特别是基础物理、操纵新技术和新兴应用。我们的综述不仅可以及时帮助该领域的新研究人员，而且可以激发未来几年在制造和设计基于 PSHE 的设备方面的更多努力。