Dates: April 25, 2019

Location: Daejeon Convention Center, Daejeon, South Korea

Coordinator: Hee Chul Park (PCS IBS, Korea), Jung-Wan Ryu (PCS IBS, Korea)

Overview:

The possibility of energy gain/loss controlling in optical systems promises a revolution to realize non-Hermitian systems. There are singularities so called exceptional points (EPs) and the non-trivialities are caused by proper symmetries. In addition to optics, the viewpoint of symmetry and topology drives to change the various direction of development of the research field such as atomic physics and condensed matter systems. In this session, we want to review non-Hermitian physics and to explore the unexpected aspects of non-Hermiticity. Moreover, symmetries and topologies of non-Hermitian systems will be introduced through discussion of latest developments in the fields as well as future directions and challenges.

Topics include:

1. • 2:30~3:06 Li Ge, City University of New York, USA
   

“Non-Hermitian photonics based on quantum-inspired symmetries”

1. • 3:06~3:30 Jae Woong Yoon, ETRI
   

“Anomalous phenomena in non-Hermitian electrical circuits and photonic structures”

1. • 3:30~4:06 Daniel Leykam, PCS IBS
   

“Continuum models of non-Hermitian topological edge states”

1. • 4:06~4:30 Teun Teun Kim, SKKU IBS
   

"Observation of exceptional points in active non-Hermitian graphene metasurfaces"

1. • 4:42~5:18 Luis E. F. Foa Torres, Universidad de Chile, Chile
   

“The Aleph and the search for topological states in non-hermitian systems”

1. • 5:18~5:54 Barbara Dietz, Lanzou Univ., China
   

"Wave Chaos in Microwave Networks Simulating GOE & GUE Graphs"

1. • 5:54~6:18 Sang-Jun Choi, PCS IBS
   

“Topologically robust defect states in two-fold PT-symmetric systems”