Unconventional next nearest neighbor resonance coupling and states flipping mechanism in degenerate optical microcavities

Abstract

We report a specially configured non-Hermitian optical microcavity, imposing spatially imbalanced gain-loss profile, to host an exclusively proposed next nearest neighbor resonances coupling scheme. Adopting scattering matrix (S-matrix) formalism, the effect of interplay between such proposed resonance interactions and the incorporated non-Hermiticity in the microcavity is analyzed drawing a special attention to the existence of hidden singularities, namely exceptional points (EPs); where at least two coupled resonances coalesce. We establish adiabatic flip-of-states phenomena of the coupled resonances in the complex frequency plane (k-plane) which is essentially an outcome of the fact that the respective EP is being encircled in system parameter plane. Encountering such multiple EPs, the robustness of flip-of-states phenomena have been analyzed via continuous tuning of coupling parameters along a special hidden singular line which connects all the EPs in the cavity. Such a numerically devised cavity, incorporating the exclusive next neighbor coupling scheme, have been designed for the first time to study the unconventional optical phenomena in the vicinity of EPs.

15 pages, 7 figures

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Cited by in corpus (9)

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• Third-order Exceptional Point and Successive Switching among Three States in a Degenerate Optical Microcavity
• Nonlinearity Induced Anomalous Mode Collapsing and Non-chiral Asymmetric Mode Switching around multiple Exceptional Points
• Higher order topological degeneracies and towards unique successive state-switching in a four-level open system
• Formation of Exceptional Points in pseudo-Hermitian Systems
• Unconventional edge states in a two-leg ladder
• Optical waveguide hosting multiple exceptional points: Toward selective mode conversion
• Exceptional Points in an Specialty Microcavity: Interplay between State-Conversion and Cavity Control Parameters
• Three State Quantum System Exhibiting Third Order Exceptional Singularities and Flip-of-States