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- W4387448972 abstract "Non-Hermitian degeneracies, also known as exceptional points, have recently attracted increased attention due to their enhanced sensitivity and distinct topological features. We realize the non-Hermitian system experimentally using four coupled microwave meta-atoms with asymmetric losses. By tuning eigenfrequencies and dissipative losses of meta-atoms, we obtain both theoretically and experimentally that multiple EPs can collide and merge, leading to higher-order singularities much richer than those seen in two-state systems. These results are expected to enrich the EPs physics and offer a supporting platform for applying high-order EPs." @default.
- W4387448972 created "2023-10-10" @default.
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- W4387448972 date "2023-10-10" @default.
- W4387448972 modified "2023-10-11" @default.
- W4387448972 title "Experimental study of the high-order exceptional points in a four-state non-Hermitian microwave meta-atoms system" @default.
- W4387448972 doi "https://doi.org/10.1051/epjap/2023230155" @default.
- W4387448972 hasPublicationYear "2023" @default.
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