报告人：季伟 博士后（美因茨大学亥姆霍兹研究所）

时 间：2023年10月27日（周五）晚19:00

地 点：腾讯会议 会议号：595 534 319

摘要：近年来，基于原子自旋的原子磁强计在磁场探测灵敏度，带宽以及能量分辨率方面都取得了突破性的进展。这些新的进展也为探索超出标准模型外的新物理提供了新的契机。本报告将介绍基于碱金属和惰性气体原子自旋的磁强计原理及技术特点，并介绍近期在暗物质轴子探测，自旋相关奇异力探测方面的进展。最后介绍本团队在利用悬浮铁磁粒子做新技术和新物理探索的一些进展。

简历：

季伟博士现在是德国美因茨大学亥姆霍兹研究所的博后研究员。他于2019年在清华大学物理系取得博士学位。他主要从事发展基于原子自旋的量子精密测量技术。主要的物理学研究方向包括暗物质探测，超出标准模型的新奇力探测，以及其他微弱磁场信号的测量。他以第一作者或通讯（共同）作者在国际权威期刊Physical Review Letters(3篇)和Nature Communications(1篇)Physical Review D(1篇)发表多篇文章，并担任这些期刊的审稿人。

联系方式：cuicuilu@bit.edu.cn

邀请人： 路翠翠 准聘教授

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： Wei Ji postdoc researcher（Helmholtz Institut Mainz in Germany）

*Time：2023, Oct 27, 19:00

*Place：Conference Number: 595 534 319

*Contact Person: Lu Cuicui

*Abstract:

Quantum magnetometry based on atomic spins has made breakthroughs in recent years for its magnetic sensitivity, bandwidth and energy resolution, which enables the searching for very weak signals originating from new physics phenomena beyond the standard model of particle physics. In this talk, I will explain the basic principle of alkali-noble gas atomic magnetometry and its advantages. Then I will report our latest results on searching for axion dark matter and exotic spin-dependent forces. Finally, I will introduce a new magnetometry method that we have developed based on levitated ferromagnetic particles, which has the potential to achieve even higher performance.

*Profile：

Dr. Wei Ji is a postdoc researcher at the Helmholtz Institut Mainz in Germany, where he works on precision magnetometry using atomic spins. He received his PhD from Tsinghua University in 2019. His research interests include searching for new physics beyond the standard model, such as dark matter and exotic spin-dependent forces. He has published several papers as the first or corresponding author in prestigious journals, such as [Physical Review Letters] (3 papers), [Nature Communications] (1 paper), and [Physical Review D] (1 paper). He also serves as a referee for these journals.