Hao Qing Zhang is a fourth-year PhD student at University of Colorado Boulder, working under the supervision of Professor Ana Maria Rey. His primary research focuses on quantum simulation and quantum metrology within cavity-QED systems, with a strong interest in the interplay among quantum information, quantum optics, many-body physics, and their realization in atomic, molecular, and optical (AMO) systems. Additionally, he collaborates closely with Professor James Thompson's group at JILA, exploring quantum many-body physics and Hamiltonian engineering using cavity-based atomic interferometers.