清华大学材料科学与工程研究院《材料科学论坛》学术报告

报告时间：2026年10月16日下午15:00-17:00

报告人：马进勇教授（深圳大学）

报告地点：清华大学逸夫技术科学楼A205学术报告厅

邀请人：孙竞博老师

报告题目：Biphoton entanglement from nonlinear metasurfaces

报告摘要：

Quantum-entangled photon pairs are fundamental to a wide range of physical phenomena and serve as a crucial resource for quantum applications such as quantum imaging, communication, and computation. Nonlinear flat optics devices were recently showcased as highly versatile, flexible, and miniaturized photon pair sources based on spontaneous parametric down-conversion (SPDC). Notably, metasurfaces featuring nanostructures that support optical resonances can enhance and tailor the SPDC process beyond what is possible with conventional bulky nonlinear crystals. Here we present our recent works in the generation of entangled photon pairs from nonlinear metasurfaces and their applications in quantum imaging. We develop a nonlocal metasurface based on the LiNbO3-on-insulator platform for the generation of spatially entangled photon pairs. Using this platform, we formulate and experimentally demonstrate the unique benefits and practical potential for quantum amplitude and phase imaging. Furthermore, we develop [110] InGaP metasurfaces for generating tunable biphoton quantum entanglement and for tailoring quantum nonreciprocity. These results pave the way for advancements in quantum technologies using ultra-compact nanostructured metasurfaces.

报告人简介：

马进勇，深圳大学特聘教授、博士生导师、量子精密测量研究所副所长，入选国家海外优秀青年。申请人长期从事量子纳米光子学实验与理论研究，已在eLight、Science Advances、Optica等发表SCI论文30余篇。申请人在非线性超表面纠缠光源领域的相关研究成果获国际同行高度关注，Nature Photonics编辑在采访团队与申请人后，于会议报道“Quantum meets nanophotonics”中多次介绍其在量子超表面领域的研究进展与贡献。担任Science Advances、Nature Communications等10余种期刊审稿人。主持国家优秀青年基金（海外）、国家重大科技专项项目课题、以及国自然面上项目。