ABSTRACT
The rapid advancement of quantum technologies has led to diverse applications in sensing, simulation, and computation. Central to these advancements is the development of precise and robust quantum control techniques. In this talk, I will present how innovations in the control of light-matter interaction to the control of interaction among spins—are enabling breakthroughs in quantum applications. I will introduce a few novel sensing protocols we developed to improve the performance of quantum sensors based on solid-state spins. These protocols include a quantum mixer capable of sensing arbitrary frequency signals, a hyperfine-enhanced gyroscope with up to 1000-fold sensitivity improvement, and techniques to extend spin ensemble coherence to the single-spin limit. If time permits, I will report our recent progress in leveraging strong light-matter interactions within a novel bow-tie cavity to enhance the performance of atom array quantum platforms. Key achievements include probing atom array geometry through cavity Bragg scattering and the first real-time observation of atomic collisions. These advances also pave the way for entanglement-enhanced quantum metrology and next-generation quantum technologies. By integrating these diverse aspects of quantum control, this talk will illustrate how they collectively drive innovation in quantum sensing and computation, shaping the future of the field.
BIOGRAPHY
Guoqing Wang is an Assistant Professor at Peking University, where his research integrates experimental and theoretical efforts to develop innovative approaches for quantum information applications, including quantum computation, sensing, and simulation. His work leverages solid-state spins and neutral atoms confined in optical tweezers, with a particular emphasis on cavity QED techniques to enhance light–matter interactions and enable novel quantum technologies. He received a B.S. in Physics from Peking University in 2018 and a Ph.D. in Quantum Science and Engineering from MIT in 2023. He continued as a postdoctoral researcher at MIT until 2025, before joining Peking University as an Assistant Professor in June 2025. He has authored 14 publications as (co-)first or corresponding author in high-level journals such as PNAS, PRL, and PRX.
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