Adjusting exceptional points using saturable nonlinearities

Qingxin Gu, Chunlei Qu, Yongping Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

We study the impact of saturable nonlinearity on the presence and location of exceptional points in a non-Hermitian dimer system. The inclusion of the saturable nonlinearity leads to the emergence of multiple eigenvalues, exceeding the typical two found in the linear counterpart. To identify the exceptional points, we calculate the nonlinear eigenvalues both from a polynomial equation for the defined population imbalance and through a fully numerical method. Our results reveal that exceptional points can be precisely located by adjusting the non-equal saturable nonlinearities in the detuning space.

Original languageEnglish
Article number107736
JournalResults in Physics
Volume61
DOIs
StatePublished - Jun 2024

Keywords

  • Exceptional points
  • Nonlinear dimer
  • Saturable nonlinearity

Fingerprint

Dive into the research topics of 'Adjusting exceptional points using saturable nonlinearities'. Together they form a unique fingerprint.

Cite this