Topologically Enabled Light-Matter Interactions

June 6th, 2018 IDO KAMINER Technion - Massachusetts Institute of Technology (MIT)

Topological aspects of light and light-matter interactions promise new ways to control a wide range of physical phenomena: from manipulating the dynamics of particles, through enabling forbidden electronic selection rules, to controlling the light emission from charged particles.

We show that tailoring the topology of the phase space of light-particle interaction is a powerful approach for manipulating particle dynamics. In this fashion, we find that optically asymmetric (Janus) particles can become stable nanoscale motors. We predict that imbuing highly confined polaritons with orbital angular momentum can enable electronic transitions that are conventionally forbidden by angular momentum selection rules. Finally, we show that tailoring the orbital angular momentum of a charged particle controls the processes by which it emits light, for example altering the preferred angles and polarizations of Cherenkov radiation.

Seminar, June 6, 2018, 12:00. ICFO’s Seminar Room

Hosted by Prof. Frank Koppens