论文标题
带有内存的Floquet系统中的模式吸引力：应用到镁质
Mode attraction in Floquet systems with memory: application to magnonics
论文作者
论文摘要
水平吸引力是一种在开放系统中的模式杂交类型，在该系统中，不是形成杂交差距，而是在以特殊点为界的区域中的两种模式结合的能量谱。我们证明，这种现象可以在带有内存的浮子系统中实现，该系统出现在描述具有极限周期的非线性驱动系统中的线性激发中。该系统在该状态下的线性响应与其在热力学平衡附近的响应不同。我们开发了一种一般形式主义，并在腔镁的背景下提供了一个示例，在那里我们表明，远离平衡驱动的系统中的磁激发可能显示出具有腔光子的吸引力。我们的方法在量子和半经典磁化动力学方面同样效果很好。该理论得以制定，以便可以与微磁模拟结合使用，以探索广泛的实验有趣系统。
Level attraction is a type of mode hybridization in open systems where instead of forming a hybridization gap, the energy spectrum of two modes coalesce in a region bounded by exceptional points. We demonstrate that this phenomenon can be realized in a Floquet system with memory, which appears in describing linear excitations in a nonlinear driven system with a limit cycle. Linear response of the system in this state is different from its response near thermodynamic equilibrium. We develop a general formalism and provide an example in the context of cavity magnonics, where we show that magnetic excitations in systems driven far from the equilibrium may show level attraction with cavity photons. Our approach works equally well for quantum and semiclassical magnetic dynamics. The theory is formulated so that it can be used in combination with micromagnetic simulations to explore a wide range of experimentally interesting systems.
