報告題目：Probing Light-Matter Interaction at the Spatial Limit
報告人：李紹巍（Department of Chemistry and Biochemistry University of California, San Diego）
報告地點：騰訊會議 ID：437 571 223
The transformative ability of physics and chemistry to impact quantum information science lies within the demonstration of atomic-scale control of quantum coherence, which typically involves the idea of tuning the population of multiple excited states of individual quantum systems with light. In general, the light-induced physical and chemical processes lead to the dynamic reorganization of a large number of atoms and molecules. One persistent goal in the scientific community is to be able to visualize and manipulate individual molecules and compose the coherence information with the super-positions of their quantum states in real-time. The combination of a femtosecond (fs) laser and a scanning tunneling microscope (STM) is believed to be the ultimate approach to achieve simultaneous spatial and temporal resolutions. The coupling of femtosecond laser pulses to the tunneling electrons breaks the diffraction limit in traditional optical microscopy and allows the detection of light-matter interaction with sub-?ngstr?m resolution. In this colloquium, I will present the recent advancements of the Optical-STM technique to investigate the interfacial charge transfer, bond-selective photo-chemical reaction, and ultimately coherent dynamics of single molecules and low-dimensional materials with joint fs-? sensitivity.
Shaowei Li is an assistant professor of Chemistry and Biochemistry at the University of California, San Diego, and also the chair-elect of APS Forum for Early Career Scientists (FECS). He is serving in the Admissions & Recruitment committee at UCSD this year. Shaowei received his bachelor’s degree in physics from Nankai University in 2010 and his Ph.D. from UC Irvine in 2017. Before joining UCSD, he was a postdoc fellow at Northwestern University following by Heising-Simons Junior fellow at UC Berkeley. Shaowei is also the recipient of the OCPA Outstanding Dissertation Award, ACS PHYS Young Investigator Award, and APS FWS Margaret Burbidge Award.