Solid State Technology and Devices Seminar: From Negative Index Nanophotonic Structures to Topological Light Sources

Seminar | November 17 | 1-2 p.m. | Cory Hall, 521 Cory (Hogan Room)

 Boubacar Kanté, Professor, University of California San Diego

 Electrical Engineering and Computer Sciences (EECS)

During the last two decades, our ability to nanostructure materials has led to a better understanding of the role of electromagnetic multipoles in the control of light-matter interaction. In this talk, I will discuss how symmetry considerations have enabled the construction of negative index nanophotonic structures from closed metallic nanorings, the analogue of the Bohr model of atoms (previously deemed impossible). I will also discuss how symmetries, via the control of the interaction of electromagnetic multipoles, enable the construction of unique cavities supporting lasing using bound states in continuum with numerous potential applications. I will discuss the topology of these states, their experimental observation, as well as the prospect to implement non-reciprocity, a long searched functionality in optical systems, in magnetized and functional topological optical cavities.

 m.rivera@eecs.berkeley.edu, 510-642-3214