Parity-time symmetry and exceptional points in photonics

Affiliations

• ¹ Department of Engineering Science and Mechanics, and Materials Research Institute, The Pennsylvania State University, University Park, PA, USA. sko9@psu.edu.
• ² Institute for Theoretical Physics, Vienna University of Technology (TU Wien), Vienna, Austria. stefan.rotter@tuwien.ac.at.
• ³ Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Saitama, Japan.
• ⁴ Physics Department, The University of Michigan, Ann Arbor, MI, USA.
• ⁵ Electrical and Systems Engineering, Washington University, St Louis, MO, USA.