Chiral behaviour of the wave functions for three wave guides in the vicinity of an exceptional point of third order

Regular Article

Abstract

A matrix model that has been used to describe essential features of a parity-time symmetric set-up of three coupled wave guides is investigated. The emphasis of the study lies on the occurrence of an exceptional point of third order. It is demonstrated that the eigenfunctions in close vicinity of the exceptional point have a distinctive chiral behaviour. Using data describing realistic situations it is argued that such chiral behaviour can be tested experimentally.

Graphical abstract

Keywords

Optical Phenomena and Photonics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  1. 1.Department of PhysicsUniversity of StellenboschMatielandSouth Africa
  2. 2.National Institute for Theoretical Physics (NITheP)Western CapeSouth Africa
  3. 3.Institut für Theoretische Physik, Universität StuttgartStuttgartGermany

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