超构表面介导的多量子通道可调谐单光子斯格明子
Multi-quantum-channel mediated tunable single-photon skyrmions from metasurfaces
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中文总结 AI 辅助
该研究利用超构表面实现偏振纠缠光子对的多通道量子态分布，通过多通道量子测量介导生成可调谐单光子斯格明子，为抗噪高维量子信息处理提供了可行路径。
中文摘要 AI 辅助
量子光学斯格明子作为拓扑鲁棒的量子信息载体，对构建抗干扰的高维量子信息网络具有变革性潜力。然而，其实际应用仍局限于单量子通道，这阻碍了实用高容量量子网络所需的多路复用。本文利用超构表面实现偏振纠缠光子对的多通道量子态分布，通过紧凑的平面光学在自旋和空间维度诱导双光子聚束效应。在空间聚束端口，对自旋-轨道相互作用的可控操控可生成可调谐单光子斯格明子对。与以往任何斯格明子生成方案不同，该单光子斯格明子由多通道量子测量介导并受其拓扑控制。同时，在振幅和相位调制过程中，斯格明子的局域化和纹理螺旋度均可精确定制。所提出的可调谐单光子斯格明子具备多维可控性和拓扑稳定性，为抗噪高维量子信息处理提供了可行路径。
英文摘要
Quantum optical skyrmions, as topologically robust quantum information carriers, hold transformative potential for resilient high-dimensional quantum information networks. However, their practical exploitation was still restricted to a single quantum channel, which precludes the multiplexing essential for practical high-capacity quantum networks. Here, we utilize a metasurface to achieve multi-channel quantum state distribution of the polarization-entangled photon pairs, inducing a two-photon bunching effect in both the spin and spatial dimensions with compact flat optics. At the spatial bunching port, controlled manipulation of the spin-orbit interaction enables the generation of a tunable single-photon skyrmion pair. In contrast to any prior skyrmion generation, the single-photon skyrmions are mediated and topologically controlled by quantum measurement in multiple channels. Concurrently, during the amplitude and phase modulation process, both the skyrmion localization and the texture helicity can be precisely customized. The proposed tunable single-photon skyromions offer multidimensional controllability and topological stability provide a viable path toward noise-resilient high-dimensional quantum information processing.
