4.6 Article

Optical lattices with higher-order exceptional points by non-Hermitian coupling

Journal

APPLIED PHYSICS LETTERS
Volume 113, Issue 10, Pages -

Publisher

AMER INST PHYSICS
DOI: 10.1063/1.5043279

Keywords

-

Funding

  1. National Key R&D Program of China [2017YFA0303702]
  2. National Science Foundation of China [11674166, 11674168, 11774162, 11621091]

Ask authors/readers for more resources

Exceptional points (EPs) are degeneracies in open wave systems with coalescence of at least two energy levels and their corresponding eigenstates. In higher dimensions, more complex EP physics not found in two-state systems is observed. We consider the emergence and interaction of multiple EPs in a four coupled optical waveguides system by non-Hermitian coupling showing a unique EP formation pattern in a phase diagram. In addition, absolute phase rigidities are computed to show the mixing of the different states in definite parameter regimes. Our results could be potentially important for developing further understanding of EP physics in higher dimensions via generalized paradigm of non-Hermitian coupling for a generation of parity-time devices. Published by AIP Publishing.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available