A trapped-ion experiment demonstrates a fourth-order exceptional point in a programmable four-level non-Hermitian simulator and observes the coalescence of two second-order exceptional points into it.
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Programmable simulation of high-order exceptional point with a trapped ion
A trapped-ion experiment demonstrates a fourth-order exceptional point in a programmable four-level non-Hermitian simulator and observes the coalescence of two second-order exceptional points into it.