3 papers
physics.optics2026
Enhancement of signal-to-noise ratio at a high-order exceptional point of coherent perfect absorption
Zi-Qi Wang, Yi-Ming Sun, Yao-Dong Hu +4
Exceptional points (EPs) in non-Hermitian systems offer a remarkably strong response to weak perturbations, but the nonorthogonal nature of the corresponding eigenvectors causes no…
physics.optics2026
Unidirectional exceptional point of reflectionless states in a magnonic mirror array
Zi-Qi Wang, Yuan-Peng Peng, Yi-Pu Wang +1
Exceptional points (EPs) in non-Hermitian systems are singularities where both eigenvalues and eigenvectors coalesce. In scattering systems, EPs correspond to the merging of scatte…
physics.optics2025
Single-mode magnon-polariton lasing and amplification controlled by dissipative coupling
Zi-Qi Wang, Zi-Yuan Wang, Yi-Pu Wang +1
We demonstrate single-mode lasing of magnon polaritons in a cavity magnonic system enabled by dissipative coupling between two passive modes, microwave cavity mode and magnon mode…