Non-Hermitian skin effect and lasing of absorbing open-boundary modes in photonic crystals

@article{Ochiai2022NonHermitianSE,
  title={Non-Hermitian skin effect and lasing of absorbing open-boundary modes in photonic crystals},
  author={Tetsuyuki Ochiai},
  journal={Physical Review B},
  year={2022}
}
  • T. Ochiai
  • Published 1 September 2022
  • Physics
  • Physical Review B
We explore absorbing open-boundary modes in non-Hermitian photonic systems. The modes have a continuum spectrum in the infinite-system-size limit and can exhibit the non-Hermitian skin effect. In contrast to the conventional non-Hermitian skin modes under the fixed-end open-boundary condition, the modes concerned exhibit a strongly size-dependent spectrum that gradually converges to the non-Bloch-band dispersion. The modes correspond to the poles of the S matrix, and are closely related to the… 
View PDF on arXiv
1 Citation
Background Citations
1

Figures from this paper

One Citation

Optical non-Hermitian skin effect in two-dimensional uniform media

The non-Hermitian skin effect (NHSE) is a novel localization phenomenon in certain non-Hermitian systems with gain and/or loss. Most of previous works study the non-Hermitian skin effect in periodic…

16 References

Geometry-dependent skin effects in reciprocal photonic crystals

Abstract Skin effect that all eigenmodes within a frequency range become edge states is dictated by the topological properties of complex eigenvalues unique in non-Hermitian systems. The prevailing…

Computation of Complex Band Structures and Transmission Spectra of 2-D Photonic Crystals Using a Layer-KKR Method

Abstract The photonic band structures of 2-D photonic crystals consisting of cylindrical dielectric rods on a square and on a triangular lattice are computed by a layer-KKR method. The matrices…

Non-Hermitian photonics based on parity–time symmetry

Nearly one century after the birth of quantum mechanics, parity–time symmetry is revolutionizing and extending quantum theories to include a unique family of non-Hermitian Hamiltonians. While…

Observation of non-Hermitian topology and its bulk–edge correspondence in an active mechanical metamaterial

It is demonstrated that topological properties of a mechanical system can predict the localization of waves in realistic settings where the energy can grow and/or decay, and open avenues for the field of non-Hermitian topology and for manipulating waves in unprecedented fashions.

Active topological photonics

Abstract Topological photonics emerged as a novel route to engineer the flow of light. Topologically protected photonic edge modes, which are supported at the perimeters of topologically nontrivial…

A perfectly matched layer for the absorption of electromagnetic waves

Numerical experiments and numerical comparisons show that the PML technique works better than the others in all cases; using it allows to obtain a higher accuracy in some problems and a release of computational requirements in some others.

Theory of Low-Energy Electron Diffraction

A method for calculating the intensities of diffracted waves in low energy electron diffraction by crystals is proposed. The elastic multiple scattering is fully taken into account. The cellular…

Multiple scattering effects in photon diffraction for an array of cylindrical dielectrics

Photonic zero mode in a non-Hermitian photonic lattice

Zero-energy particles (such as Majorana fermions) are newly predicted quasiparticles and are expected to play an important role in fault-tolerant quantum computation. In conventional Hermitian…

I and J