2 papers
physics.optics2026
Chiral-Mode Control around a Hermitian Diabolic Point in Discrete Non-Hermitian Coupled Resonators
Kota Yagi, Takahiro Uemura, Yuto Moritake +2
Motivated by the prospect of chiral-mode control in compact photonic systems, we analyze discrete coupled single-mode resonators. Using the minimal three-resonator model, we show t…
physics.optics2025
Higher-order exceptional points unveiled by nilpotence and mathematical induction
Kenta Takata, Adam Mock, Masaya Notomi +1
Non-Hermitian systems can have peculiar degeneracies of eigenstates called exceptional points (EPs). An EP of degenerate states is said to have order , and higher-order EPs…