The Hunt for Forbidden Dark Excitons in Two-Dimensional Semiconductors

Join a webinar featuring Dr. Keshav Dani, Associate Professor at OIST and head of the Femtosecond Spectroscopy Unit, as he presents groundbreaking research on the direct imaging of dark excitons in two-dimensional semiconductors. Explore the decade-long scientific journey that led to the first-ever visualization of these forbidden particles, previously only detected through their interactions with optically active counterparts. Learn about the development of novel experimental instrumentation that made this breakthrough possible, and understand the implications of this discovery for advancing opto-electronic technology, quantum computing, and LED development. Delve into complex topics including energy levels, momentum challenges, microscopic samples, time resolution, and photo emission electron microscopy methodology. Gain insights from Dr. Dani's extensive expertise, developed through his work at prestigious institutions including Los Alamos National Laboratory, UC Berkeley, and Caltech, where he specialized in physics, mathematics, and quantum information theory. Discover how this research, published in Science journal, reveals the surprising dominance of dark excitons after photoexcitation and their potential impact on future technological applications.