Nonlinear Reversal Of The Pt -Symmetric Phase Transition In A System Of Coupled Semiconductor Microring Resonators

Abstract

A system of two coupled semiconductor-based resonators is studied when lasing around an exceptional point. We show that the presence of nonlinear saturation effects can have important ramifications on the transition behavior of this system. In sharp contrast with linear PT-symmetric configurations, nonlinear processes are capable of reversing the order in which the symmetry breaking occurs. Yet, even in the nonlinear regime, the resulting non-Hermitian states still retain the structural form of the corresponding linear eigenvectors expected above and below the phase-transition point. The conclusions of our analysis are in agreement with experimental data.

Publication Date

12-7-2015

Publication Title

Physical Review A - Atomic, Molecular, and Optical Physics

Volume

92

Issue

6

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevA.92.063807

Socpus ID

84950123988 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84950123988

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