题目：Metasurface-Enabled Generation of Quantum Structured Light
时间：2026年10月12日 10:00-12:00
地点：必赢线路检测3003 F207会议室
邀请人：赵长颖 教授（工程热物理研究所）
Biography
Sergey I. Bozhevolnyi is a Professor and Head of Centre for Nano Optics at the University of Southern Denmark , as well as a Chair of Technical Science at Danish Institute of Advanced Study and a member of Danish Academy of Natural Sciences and Danish Academy of Technical Sciences.His current research interests include linear and nonlinear nano-optics and plasmonics, including plasmonic interconnects, quantum plasmonics and metasurfaces.Prof. Bozhevolnyi has been bestowed with the Villum Kann Rasmussen Award， the Danish Optical Society Senior Award and the EPS-QEOD Prize for Research in Laser Science and Applications.
Abstract
Manipulation of single-photon emission from quantum emitters (QEs) has attracted considerable attention in recent years. In this lecture, a general approach for designing single-photon sources of high-dimensional spin-orbital photon beams is presented with the overall goal of drastically expanding the degrees of freedom exploited for encoding photons to be used in quantum communications. The main idea is to design on-chip QE-coupled composite metasurfaces, consisting of arrays of subwavelength elements and supporting the propagation of surface plasmon polaritons (SPPs), to make full use of spatial freedom and outcouple QE-excited (nonradiative) SPPs into photon emission encoded with vectorial spin-orbital states. We further extend vectorial scattering holography to separately generate the interference patterns of spin-orbital waves and QE-excited SPPs , which are then superimposed as a Moiré pattern and binarized to be used to fabricate a nanoridge patterned metasurface. The experimentally realized generation of arbitrary vectorial spin-orbital quantum emission in high-dimensional Hilbert spaces is presented with the hybrid-order Bloch spheres , revealing accurate manipulation of arbitrary vectorial spin-orbital states.
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