报告题目：Cavity Quantum Electrodynamics for Nanomaterials: From ultrafast phenomena to thermodynamics

报告人：张哲东，香港城市大学物理学系助理教授

报告时间:  2021年10月28日下午4点

报告地点: 必赢电子游戏网站中心校区物理楼302

报告摘要: Quantum states of the light, e.g., single photons, entanglement and squeezing, opens up a new avenue for quantum electrodynamics (QED) by utilizing the parameters of quantum optical fields as novel control knobs and through the variation of photon statistics. With the advance of cavity QED and light source technology, imaging and controlling the electron and vibrational motions of molecules can be achieved, towards unprecedented resolution and precision, not accessible by the classical light pulses. Two key issues emerge in nanoscale: quantum states of photons and strong matter-light interaction. The underlying physics is still an open issue for molecules and spectroscopy. In this talk, I will present an overview of our recent work on multidimensional control and probes of ultrafast dynamics of molecular polaritons, as well as statistical mechanics of phonon condensation far from equilibrium. Several schemes will be discussed: photon-coincidence counting, multidimensional coherent probe, and Raman spectra with quantum fields. Microscopic models for molecular polaritons using reduced density matrix and Heisenberg-Langevin approach will be incorporated for a deeper and unified understanding.

报告人简介：

张哲东，香港城市大学物理学系助理教授。2016年毕业于美国纽约州立大学石溪分校物理系，获哲学博士学位。博士毕业后分别在美国加州大学欧文分校和德克萨斯农工大学从事博士后研究。2020年秋加入香港城市大学。主要研究方向是量子物理和统计力学，从事介观尺度材料与光的相互作用，量子热力学和量子超快过程方面的理论研究，发展相应的时间-频率分辨光谱技术。自2014年起在包括Phys. Rev. Lett., Optica, J. Phys. Chem. Lett., Phys. Rev. A和Phys. Rev. B等国际一流刊物发表学术论文27篇，h-index为12；两篇文章分别入选英国皇家物理学会期刊New Journal of Physics的“IOP Select Featured Article (2015)”和欧洲物理学会期刊Europhysics Letters的“Editor’s Choice Article and selected as Highlights of 2016”；是量子凝聚统计理论的开创者，并得到瑞典哥德堡大学实验室的实验验证；曾获得美国德克萨斯州的Robert A. Welch Postdoctoral Fellowship (2019)。张博士目前为美国物理学会会员。

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