Abstract
AbstractDiverse exceptional points (EPs) are theoretically studied in an experimentally feasible magno‐optomechanics consisting of an optomechanical subsystem coupled to a magnomechanical subsystem via physically direct contact. By adiabatically eliminating both the cavity and the Kittel mode, dissipative and parity‐time symmetric exceptional points can be observed. When only the cavity mode is eliminated, a second (third)‐order pseudo‐Hermitian EP emerges for nondegenerate (degenerate) mechanical modes. The distinct dynamical behavior of two mechanical modes around these EPs are further studied. The proposal provides a promising way to engineer diverse EPs and quantify non‐Hermitian phase transition with exceptional dynamical behavior in magno‐optomechanics.
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