Assembles optical-tweezer-trapped arrays of ultracold atoms and polar molecules (including NaRb) for quantum information science, quantum simulation, and cluster-state quantum computing, with associated Rydberg-based sensing capabilities.

Works on quantum photonics and microwave-to-optical quantum transduction, collaborating on interconnects to link superconducting quantum processors via optical quantum networks.

Studies experimental quantum optics and atomic physics, including quantum light-matter interfaces, quantum memories, and single-photon sources based on atom-like emitters in solids, for applications in long-distance quantum communication and quantum networking.

Pioneer of experimental quantum optics with entangled and hyper-entangled photons; research spans quantum information processing, quantum communication, quantum-enhanced metrology and sensing, and fundamental tests of quantum mechanics using single- and entangled-photon sources.

Works in quantum optics and AMO physics: generation, characterization, and engineering of photonic quantum states, atomic and solid-state quantum memories, single-photon-level atomic/molecular spectroscopy, and optical magnetometry for quantum sensing; leads UIUC's public quantum network project.

Studies quantum optics and quantum information with superconducting and hybrid quantum circuits, focusing on modular quantum computing architectures, microwave-to-optical photon transduction, and quantum error mitigation.