报告题目：Magnetic Feshbach Resonances in Ultracold Collisions between Alkali-metal and Closed-shell atoms

报 告 人：Baochun Yang (杨宝春)

报告时间：2019年10月12日（星期六）上午10:30

报告地点：威廉希尔 六层学术报告厅（致知楼3624）

报告摘要：

Magnetically tunable Feshbach resonances provide a valuable tool for tuning the scattering length by varying an external magnetic field, and have found a wide range of applications in studying and controlling ultracold gases of atoms and molecules. In this talk, we give a report on the recent progress in the exploration of ultracold mixtures of alkali-metal and closed-shell atoms. The general physics is demonstrated by taking the Cs+Yb system as a specific example. It is shown that the magnetic Feshbach resonance can be caused by different coupling mechanisms. An intuitive picture is introduced for a qualitative understanding on the various properties of different resonances, including their resonance positions and widths. Some important implications and possible challenges are also pointed out for future studies from both the experimental and theoretical viewpoints.

报告人简介：

杨宝春博士在2003年至2007年期间就读于威廉希尔物理与信息技术学院物理学本科专业，之后考入中国科学院理论物理研究所硕博连读并于2014年1月获理论物理专业博士学位；先后在美国普渡大学和英国杜伦大学从事博士后工作近五年。主要学术贡献在于研究并推动了半经典物理与量子混沌理论在外场原子分子动力学过程中的进一步发展和应用，研究内容涉及外场作用下的电子动力学过程以及超冷原子碰撞过程中的一系列基础前沿问题，包括超冷偶极气体中的量子混沌研究、超短脉冲电场中的电子位移电离机制以及时域光剥离显微镜理论的提出和建立。

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