Currently I am a Ph.D student in Department of Physics and Astronomy in Stony Brook University. My research mainly focus on the dissipative quantum systems. The time-irreversibility is often characterized by detailed-balance-breaking and it serves as a key role on dictating the quantum transport and also the dephasing feature. I explore the nonequilibrium quantum dynamics, in order to better understand the decoherence mechanism and the correlation to energy (charge) transport processes, i.e., the efficient excitation transfer in photosynthetic complexes and the long-lived quantum coherence in noisy environment. These may provide new insights to open quantum systems and also the transport theory.

On the other hand, I am also interested in ultracold quantum gas, which attracted much attention since 1995. Recently the experimental progress makes it accessible to the low-dimensional quantum gas, i.e., one-dimensional (1D) Bose gas in Tonks-Girardeau regime. The monopole excitations with single particles of harmonically trapped 1D Bose gas predicted by quantum many-body perturbation method is shown to coincide that of collective motion predicted by hydrodynamical approach. The full spectrum of monopole excitations is recently produced and perfectly agree with experiment.