Mechanical dynamics around higher-order exceptional point in magno-optomechanics
- URL: http://arxiv.org/abs/2406.01060v1
- Date: Mon, 3 Jun 2024 07:15:57 GMT
- Title: Mechanical dynamics around higher-order exceptional point in magno-optomechanics
- Authors: Wen-Di He, Xiao-Hong Fan, Ming-Yue Liu, Guo-Qiang Zhang, Hai-Chao Li, Wei Xiong,
- Abstract summary: We study diverse exceptional points (EPs) in an experimentally feasible magno-optomechanics consisting of an optomechanical subsystem and a magnomechanical subsystem via physically direct contact.
Dissipative and parity-time symmetric exceptional points can be observed.
Our proposal provides a promising way to engineer diverse EPs and quantify non-Hermitian phase transition with exceptional dynamical behavior in magno-optomechanics.
- Score: 4.721436448995024
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We theoretically study diverse exceptional points (EPs) 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. Our 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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