Regensburg 2022 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 9: Focus Session: Exceptional Points and Non-Hermitian Physics in Semiconductor Systems

Monday, September 5, 2022, 15:00–17:30, H33

The strong recent interest into nonconservative/non-Hermitian systems and their exotic degeneracies - so-called exceptional points - is driven by the occurrence of rather unconventional and fascinating physics and by potential applications such as ultrasensitive sensing, orbital angular momentum lasers, and topological energy transfer for mode and polarization conversion. This Focus Session aims at discussing the latest experimental and theoretical results in the rapidly developing field with special focus on semiconductor systems, where engineering the interplay of coupling, dissipation and amplification mechanisms offers novel opportunities. Moreover, we give an overview to young scientists of the exciting possibilities of interdisciplinary research in this field.

Organized by Sebastian Klembt and Jan Wiersig

	15:00	HL 9.1	Invited Talk: Exceptional points in optics: From bulk materials to one-dimensional confined systems — •Chris Sturm
	15:30	HL 9.2	Invited Talk: Complex Skin Modes in Non-Hermitian Coupled Laser Arrays — •Mercedeh Khajavikhan and Yuzhou Liu
	16:00		15 min. break
	16:15	HL 9.3	Invited Talk: Non-Hermitian effects in exciton polaritons — •Eliezer Estrecho
	16:45	HL 9.4	Invited Talk: Nonlinear dynamics and exceptional points in exciton-polariton condensates — •Stefan Schumacher
	17:15	HL 9.5	Exceptional points in anisotropic ZnO thin films — •Sebastian Henn, Evgeny Krüger, Chris Sturm, and Marius Grundmann