A central research focus of our group is the microscopic control and visualization of exciton dynamics in semiconductors, particularly in low-dimensional and hybrid material systems. Exciton dynamics govern radiative efficiency, energy transport, and ultrafast relaxation pathways, making them a key factor in semiconductor optoelectronics. Our research aims to manipulate nonradiative decay, exciton migration, and exciton–polaron formation by integrating semiconductor materials with nanophotonic architectures such as optical cavities, metasurfaces, dielectric heterostructures, and photonic structures supporting bound states in the continuum (BICs). 

By engineering the local photonic density of states, we explore how tailored light–matter interactions can suppress or redirect intrinsic dissipative relaxation channels. In particular, BIC-enabled modes offer a powerful route to selectively inhibit radiative decay while maintaining strong electromagnetic confinement, enabling access to long-lived and coherent excitonic states. Through ultrafast spectroscopy and nanoscale photonic control, our work provides a pathway toward designing excitonic energy landscapes on demand and extending exciton dynamics toward polaritonic and quantum photonic functionalities.

Another major research direction in our group is the tailoring of polaritonic states through strong light–matter coupling, where excitons coherently hybridize with confined photonic modes to form exciton polaritons. Owing to their dual light–matter character, polaritons offer a unique platform for exploring quantum collective phenomena at elevated temperatures and on ultrafast timescales. We focus on developing hybrid exciton–photon platforms that enable precise control over polaritonic dispersion, coherence, and nonlinear interactions. 

By systematically tuning cavity architectures, material composition, and exciton–photon coupling strength, we investigate polaritonic condensation, nonequilibrium quantum dynamics, and coherence buildup in the strong coupling regime. Beyond fundamental many-body physics, our work explores the potential of polaritonic systems as building blocks for exciton-based quantum information processing, including polariton-mediated interactions and coherent excitonic qubit concepts. These studies aim to bridge condensed matter physics, quantum optics, and nanophotonics, providing scalable routes toward solid-state quantum platforms.

The insights gained from controlling exciton and polariton dynamics are ultimately directed toward next-generation optoelectronic and quantum technologies. By leveraging engineered light–matter interactions, our research targets functional platforms where excitonic properties such as recombination pathways, coherence times, and interaction strengths can be dynamically tuned. 

We explore applications spanning high-efficiency light-emitting devices, ultrafast optical modulators, low-threshold polariton lasers, and quantum photonic components. In parallel, we investigate how exciton–polariton systems can serve as model platforms for studying quantum coherence, dissipation engineering, and nonequilibrium phase transitions in solid-state environments. Through the integration of advanced nanofabrication, ultrafast spectroscopy, and theoretical modeling, our group aims to establish exciton-based architectures as a unifying framework connecting optoelectronics and quantum science, enabling both fundamental discoveries and technologically relevant innovations.