Scanning-exciton optical nanoscopy using a single quantum dot
Zhiyuan Wang·Xuewen Chen·Zhaohua Tian·Haiyan Qin·Yaocheng Shi·Jie Han·Jing Tang·Weiwang Xu·Xiaoli Hou·Weixi Liu·Jinkang Cao·Hongli Chen
Abstract Mapping light fields and local density of optical states (LDOS) around nanostructured materials is instrumental for advancing both fundamentals and practical applications in nano-optics, nanomaterial science, and quantum technologies. In particular, LDOS governs key processes such as spontaneous emission, light scattering, van der Waals interactions, and nanoscale heat transfer, yet it remains inaccessible with conventional optical microscopy techniques. Here, we develop scanning-excito