Van der Waals heterostructures composed of atomically thin semiconductors have recently
emerged as a platform for studying strongly interacting electronic and excitonic systems. In this
talk, I will discuss a few ongoing experiments aimed at probing and controlling their excitonic
phases. One focus is the exploration of exciton condensates, where we realize long-lived
excitons with large binding energies and low disorder—critical factors for realizing high-
temperature condensates. Furthermore, I will highlight how exciton-carrier interactions can
create a strong nonlinear optical response, potentially enabling nonlinearity at low photon
numbers. Finally, I will present our efforts to manipulate excitons and electrons via imprinting
optical lattices at a deep subwavelength scale, providing new avenues for dynamically
controlling excitonic and electronic behaviors.
*You will need to bring your cell phone, so you can sign in using the QR code outside of ATL 2400. You will need to submit your first and last name, email, and affiliation on a form by 11:15am to be able to get lunch after the seminar. Lunch is first come, first served.*