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arXiv 2407.13145nlin.CDphysics.optics
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腔磁力学中的超低阈值混沌

Ultra-low threshold chaos in cavity magnomechanics

Jiao Peng, Zeng-Xing Liu, Ya-Fei Yu, Hao Xiong

AI总结:

本文提出一种利用双音微波场相干驱动腔磁力系统实现超低阈值混沌的有效机制,将混沌阈值功率从瓦特降低6个数量级至微瓦,为磁子非线性研究及混沌保密信息处理提供新途径。

摘要:

利用铁磁晶体中机械自由度的腔磁力系统,为在磁子自旋电子学这一新兴领域观察许多有趣的经典和量子非线性现象提供了一个强大的平台。然而,迄今为止,由于磁子固有的弱非线性相互作用,在腔磁力系统中产生和控制混沌运动仍然是一个突出的挑战。在这里,我们提出了一种实现磁力混沌的有效机制,其中磁力系统由包含泵浦场和探测场的双音微波场相干驱动。数值模拟表明,两个输入场的相对相位在控制混沌运动的出现方面起着重要作用,更重要的是,混沌的阈值功率降低了6个数量级,从瓦特降至微瓦。除了为磁子学非线性提供见解外,腔磁力混沌将始终具有吸引力,因为它在基础物理学和从超低阈值混沌运动到基于混沌的秘密信息处理等潜在应用中都具有重要意义。

英文摘要:

Cavity magnomechanics using mechanical degrees of freedom in ferromagnetic crystals provides a powerful platform for observing many interesting classical and quantum nonlinear phenomena in the emerging field of magnon spintronics. However, to date, the generation and control of chaotic motion in a cavity magnomechanical system remain an outstanding challenge due to the inherently weak nonlinear interaction of magnons. Here, we present an efficient mechanism for achieving magnomechanical chaos, in which the magnomechanical system is coherently driven by a two-tone microwave field consisting of a pump field and a probe field. Numerical simulations show that the relative phase of the two input fields plays an important role in controlling the appearance of chaotic motion and, more importantly, the threshold power of chaos is reduced by 6 orders of magnitude from watts to microwatts. In addition to providing insight into magnonics nonlinearity, cavity magnomechanical chaos will always be of interest because of its significance both in fundamental physics and potential applications ranging from ultra-low threshold chaotic motion to chaos-based secret information processing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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