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arXiv · 1809.09309

PT-Symmetric magnetic Chaos in cavity magnomechanics

Mei Wang·Duo Zhang·Yu-Ying Wu·Tai-Shuang Yin·Zhao-Yu Sun
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Abstract

Here, we research a novel cavity magnomechanical system, where magnon driven by a microwave field couples with a phonon mode with a nonlinear magneostrictive interaction (radiation pressure-like). Based on this interaction, we numerically demonstrate PT-symmetric chaos in this system. With only one monochrome driving, the chaotic threshold is lowered to a rather low levels, this is due to the dynamical enhancement of nonlinearity in the PT-symmetry broken phase. Moreover, by simply manipulating the phase transition between PT-symmetry phase and PT-symmetry broken phase, we can switch the system between into and out of chaotic regimes. Our work may broaden the cavity magnomechanics and provide a promising application for magnetic chaos-related security communications.

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Mei Wang, Duo Zhang, Yu-Ying Wu, Tai-Shuang Yin, Zhao-Yu Sun. 2018-09-25. PT-Symmetric magnetic Chaos in cavity magnomechanics. https://arxiv.org/abs/1809.09309

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