报告题目：Experiments in waveguide QED in an optical nanofiber
报告人：Luis A. Orozco 院士
主持人：荆杰泰教授
报告时间：2025年8月1日上午10:00
报告地点：闵行校区光学大楼B325会议室
报告人简介：
Luis A. Orozco was born in Guadalajara, Mexico in 1958. He completed his engineering studies at the Instituto Tecnológico y de Estudios Superiores de Occidente in Guadalajara, Mexico and his postgraduate studies in physics at the University of Texas at Austin, obtaining his doctorate in 1987. He held a postdoctoral position at Harvard, passing part of this one at CERN, Switzerland. He returned to the United States and worked from 1991 to 2003 as a professor in the physics department of the State University of New York at Stony Brook. From 2003 to 2020 he was professor of physics at the University of Maryland in College Park, MD, USA, where he co-directed the Physics Frontier Center of the Joint Quantum Institute com 2008 to 2019. Since 2021 he is Emeritus Professor. Throughout his career Dr. Orozco has been Guggenheim Fellow (1998), Fellow of the American Physical Society (2000) Fellow of the Optical Society of America (2003), Fellow of the Institute of Physics, UK (2005), Distinguished Traveling Lecturer of the American Physical Society (2002-2025) and corresponding member of the Academia Mexicana de Ciencias since (2005). He has an Honoris Causa Doctorate from INAOE, Mexico (2016). He has graduated 23 PhD students (3 from Mexico) and more than 60 undergraduates (35 from Mexico) have worked in his group. Together with his students and collaborators he is author of more than 100 publications. As a researcher, he is interested in quantum optics, quantum information, fundamental symmetry tests, and high precision spectroscopy. Among his most recognized studies are the trapping and spectroscopy of Francium for weak-interaction studies and the field intensity correlations in quantum optics.
报告摘要：
Optical nanofibers with atoms trapped on the evanescent field are an ideal platform to explore waveguide QED. We are now studying the response of the system (trapped Cs atoms) to two photon excitation (883 nm). It is possible to reach the 6D5/2 state with which the decays into an empty 6P3/2 state generating (917 nm) super-radiant pulses that subsequently decay into the 6S1/2 ground state (852 nm). Our exploration includes the time response to step excitation that shows nontrivial dynamics on the number of atoms. We are beginning to explore correlations of the 917 nm and 852 nm light in opposite directions.
