A Dirac fermion on a generalized Ellis-Bronnick wormhole surface with imaginary mass shows sequences of exceptional points whose location depends on the wormhole radius and deformation parameter.
Anisotropic exciton polariton pairs as a platform for PT-symmetric non-Hermitian physics
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
Non-Hermitian systems with parity-time (PT) symmetry have been realized using optical constructs in the classical domain, leading to a plethora of non-intuitive phenomena. However, PT-symmetry in purely quantum non-Hermitian systems like microcavity exciton-polaritons has not been realized so far. Here we show how a pair of nearly orthogonal sets of anisotropic exciton-polaritons can offer a versatile platform for realizing multiple spectral degeneracies called Exceptional Points (EPs) and propose a roadmap to achieve a PT-symmetric system. Polarization-tunable coupling strength creates one class of EPs, while Voigt EPs are observed for specific orientations where splitting of polariton modes due to birefringence is compensated by Transverse Electric (TE) -Transverse Magnetic (TM) mode splitting. Thus, paired sets of polarized anisotropic microcavity exciton-polaritons can offer a promising platform not only for fundamental research in non-Hermitian quantum physics and topological polaritons, but also, we propose that it will be critical for realizing zero threshold lasers.
fields
gr-qc 1years
2025 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Non-hermitian phase transitions on a generalized Ellis-Bronnikov wormhole bridge
A Dirac fermion on a generalized Ellis-Bronnick wormhole surface with imaginary mass shows sequences of exceptional points whose location depends on the wormhole radius and deformation parameter.