【时间】2025年9月5日（星期五）10:30

【地点】广东会院526会议室

【主持】尤力

【题目】Few-body collisions in ultracold quantum gas and imaging transient molecular structures using Coulomb explosion

【简介】Yijue Ding received a B.S. from Jilin University in 2011 and a Ph.D. from Purdue University in 2017 under the supervision of Professor Chris H. Greene, an elected member of the U.S. National Academy of Sciences. From 2019 to 2020, he worked as a postdoctoral researcher in the Department of Chemistry at Purdue University. Between 2020 and 2024, he served as a Research Associate at Kansas State University. His research focuses on ultracold quantum gases and ultrafast laser imaging. He has extensive experience in the theory of few-body collisions in cold atoms as well as in simulations of photochemical reaction dynamics. He has published more than ten peer-reviewed articles, including papers in Physical Review A, The Journal of Chemical Physics, and Physical Chemistry Chemical Physics. He also serves as a reviewer for journals such as New Journal of Physics, Journal of Physics B, and Journal of the Optical Society of America B.

【摘要】In this report, I will summarize the work I have conducted at Purdue University and Kansas State University. Our group at Purdue focuses on theoretical studies of ultracold quantum gases, with an emphasis on universal few-body collisional physics, such as the formation of Feshbach dimers and Efimov trimers. At Kansas State, our lab uses femtosecond laser pulses to investigate the ultrafast photochemical reaction dynamics. We employ a technique called Coulomb explosion imaging to reveal transient molecular structures during chemical reactions. In this report, I will discuss the control of cold atom collisions using external electromagnetic fields, as well as the simulations and modeling efforts to support Coulomb explosion experiments aimed at studying the dynamics of halomethanes. I will also briefly outline my future plans to use quantum computing algorithms for simulating reaction dynamics.