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physics.optics2023
Observation of non-Hermitian antichiral edge currents
Rui Ye, Yanyan He, Guangzhen Li +8
Non-Hermitian topological photonics is of great interest in bridging topological matter with gain/dissipation engineering in optics. A key problem in this direction is the interpla…
physics.optics2018
Asymmetric lasing at spectral singularities
L. Jin
Scattering coefficients can diverge at spectral singularities. In such situation, the stationary solution becomes a laser solution with outgoing waves only. We explore a parity-tim…
physics.optics2018
Parity-time symmetric coupled asymmetric dimers
L. Jin
We investigate a parity-time (PT) symmetric system that consists of two symmetrically coupled asymmetric dimers. The enclosed magnetic flux controls the PT phase transition. The sy…