报告人：袁璐琦 教授（上海交通大学）

时 间：2024年10月16日（周三）上午10:00

地 点：7003全讯入口良乡校区，理学楼B-203会议室

摘要：

合成维度光子学，通过利用多种光场自由度构建人工合成维度并在其中研究光学模拟物理问题，最近得到了国际上的广泛关注。而基于光场的频率自由度，通过动态电光调制在光频率轴上构建光子紧束缚模型，即合成频率维度，对于光学模拟与光场调控方向的研究也有着重要的意义。在本次报告中，我将介绍光子合成频率维度基础，汇报在其中通过设计谐振腔系统与调制信号去构建一系列人工光子晶格模型并开展包括光子能带观测、拓扑系统表征、非厄米效应研究等诸多实验验证以及理论探索的研究进展，展示其中与等效规范场、拓扑边缘流、动态能带、平带局域、时间调制、非阿贝尔干涉等物理概念相关的各类光学模拟现象。我们的工作基于人工虚构光子晶格，通过可控外电场提供了多维度下的光场调控新方案，未来有望在光信号处理、光量子态操控、光子芯片设计等领域中有着潜在的应用前景。

简历：

袁璐琦博士，上海交通大学物理与天文学院教授，博士生导师。主要从事光子学和量子光学及相关领域的工作, 主要研究方向包含光子合成维度、拓扑与非厄米光子学、混合光量子系统等。迄今发表学术论文100余篇，并担任期刊 Communications Physics 编委、Ultrafast Science青年编委、Advanced Photonics青年编委。

联系方式：chentian@bit.edu.cn

邀请人： 陈天 副教授

网 址：/

承办单位：物理学院、先进光电量子结构设计与测量教育部重点实验室

*Reporter：Luqi Yuan, Professor (Shanghai Jiao Tong University)

*Time：Oct. 16th , 2024 (Wednesday) 10:00am

*Place：Room B-203 Science Building, Liangxiang Campus

*Contact Person: Tian Chen, Associate Professor, chentian@bit.edu.cn

*Abstract:

Synthetic dimensional photonics, which utilizes multiple degrees of freedom of light fields to construct artificial synthetic dimensions and study optical simulation physics problems, has recently received widespread attention internationally. Based on the frequency degrees of freedom of the optical field, constructing a photon tight confinement model on the optical frequency axis through dynamic electro-optic modulation, i.e. synthesizing the frequency dimension, is also of great significance for the research of optical simulation and optical field control direction. In this talk, I will introduce the frequency dimension foundation of photon synthesis, report on the research progress of constructing a series of artificial photon lattice models through the design of resonant cavity systems and modulation signals, and carry out many experimental verifications and theoretical explorations, including photon band observation, topological characterization, and non-Hermitian researches. I will showcase various optical simulation phenomena related to physical concepts such as the effective gauge field, topological edge flow, dynamic band, flat-band localization, time modulation, and non-Abelian interference. Our works are based on the artificial fabrication of photonic lattices, providing a new multi-dimensional light field control scheme through controllable external electric fields. It is expected to have potential applications in fields such as optical signal processing, photon state manipulation, and photonic chip design in the future.

*Profile：

Dr. Luqi Yuan, Professor and Doctoral Supervisor at the School of Physics and Astronomy, Shanghai Jiao Tong University. His researches are mainly engaged in photonics, quantum optics and related fields, with research directions including photon synthesis dimension, topology and non-Hermitian photonics, mixed light quantum systems, etc. Up to now, He has published over 100 peer-reviewed papers and served as an editorial board member for many prestigious journals, such as Communications Physics, Ultrafast Science, and Advanced Photonics.