Mechanical dynamics around higher-order exceptional point in magno-optomechanics

Autor:	He, Wen-Di, Fan, Xiao-Hong, Liu, Ming-Yue, Zhang, Guo-Qiang, Li, Hai-Chao, Xiong, Wei
Rok vydání:	2024
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	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. Comment: 7 pages,6 figures,accepted by Advanced Quantum Technologies
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2406.01060 Zobrazit plný text záznamu View this record from Arxiv