Dr. Zhedong Zhang is now an Assistant Professor in Department of Physics at City University of Hong Kong. He obtained his Ph.D. in physics from Stony Brook University in 2016. Since then, he has been working with Shaul Mukamel, Girish Agarwal and Marlan Scully (NAS, FRS & AAAS), as a postdoctoral scholar. He received the Robert A. Welch Postdoctoral Fellowship in 2020. Dr. Zhang is a member of American Physical Society.
Dr. Zhang’s research interest is the theoretical quantum physics, with a foci of quantum-light nonlinear spectroscopy and quantum thermodynamics at mesoscopic scale. He has about 30 professional publications, on high-profile journals including Phys. Rev. Lett., Optica, Light: Sci. & Appl., J. Phys. Chem. Lett., Phys. Rev. A and Phys. Rev. B.
Quantum states of the light, e.g., single photons, entanglement and squeezing, opens up a new avenue for spectroscopy by utilizing the parameters of quantum optical fields as novel control knobs and through the variation of photon statistics. With the advance of cavity quantum electrodynamics 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. In this talk, I will present our recent works on multidimensional spectroscopy using quantum states of light, including 2D photon-coincidence counting and Raman spectroscopy. Microscopic models for molecular relaxation using reduced density matrix will be incorporated for a unified understanding of the signals.