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Ill-Defined Topologies and Energy Sinks in Photonic Systems
In recent years there has been a great interest in topological materials and in their fascinating properties. Topological band theory was initially developed for condensed matter systems, but it can be readily applied to arbitrary wave platforms with little modifications. Thus, the topological classification of optical systems is usually regarded as being mathematically equivalent to that of condensed matter systems.

In this webinar hosted by the NonImaging Optical Design Technical Group, Mário Silveirinha will demonstrate that both the particle-hole symmetry and the dispersive nature of nonreciprocal photonic materials may lead to situations where the usual topological methods break down and the Chern topology becomes ill-defined. Furthermore, Prof. Silveirinha will show how by exploiting ill-defined topologies it is possible to halt abruptly the wave propagation at a topological singularity that determines the transition between well-defined and ill-defined topologies. Prof. Silveirinha’s vision is that systems with ill-defined topologies may open new inroads in nanoplasmonics and have exciting applications in energy harvesting and in the enhancement of nonlinearities.

Subject Matter Level: Intermediate - Assumes basic knowledge of the topic

What You Will Learn:
• Topology
• Nonreciprocal Materials
• Nanophotonics

Who Should Attend:
• Students
• Early career scientists
• Professionals

Dec 1, 2022 02:00 PM in Eastern Time (US and Canada)

Webinar is over, you cannot register now. If you have any questions, please contact Webinar host: Optica Technical Groups.