Rapid progress in the development of metamaterials and metaphotonics allowed bulky optical assemblies to be replaced with thin nanostructured films, often called metasurfaces, opening a broad range of novel and superior applications of flat optics to the generation, manipulation and detection of classical light. Recently, these developments started making headway in quantum photonics, where novel opportunities arose for the control of non-classical nature of light, including photon statistics, quantum state superposition, quantum entanglement and single-photon detection. In this Perspective, we review recent progress in the emerging field of quantum-photonics applications of metasurfaces, focusing on innovative and promising approaches to create, manipulate and detect non-classical light.

超材料和超光子学的飞速发展使得笨重的光学组件被薄的纳米结构薄膜（通常称为超表面）所取代，从而为平面光的产生，操纵和检测开辟了广泛的新颖且优越的平面光学应用领域。最近，这些进展开始在量子光子学中取得进展，那里出现了控制光的非经典性质的新机会，包括光子统计，量子态叠加，量子纠缠和单光子检测。在本《观点》中，我们回顾了超颖表面在量子光子学应用领域中的最新进展，重点介绍了创新，有前途的方法来创建，操纵和检测非经典光。