Our group focuses on physics of light-matter interaction and design of high-bandwidth optoelectronic devices. We study optoelectronic dynamics at atomic spatial scale, at ~100 femtosecond temporal resolution, with exciting photon energy from 2 eV to ~10 meV, and at temperature from 4 K to 350 K. We are particularly interested in topological and quantum geometric optoelectronics wherein unconventional optoelectronic phenomena are caused by the non-trivial winding of Bloch wavefunctions in materials. Our group also works on designing silicon photonic devices hybridized with functional optoelectronic materials such as two-dimensional materials.

We are affiliated with the School of Electronics at Peking University and Academy for Advanced Interdisciplinary Studies at Peking University.