スピントロニクスにおける量子コヒーレンス（理論）

最终确定了微波腔磁子背景下自旋波的非线性，并在美因茨的SPICE研讨会（2018年）和埃尔兰根的马克斯-普朗克光（2018年）上向社区介绍了这些发现。相应的手稿在作者M. Elyasi， Ya之间进行最后的修改。M. Blanter和G. E. W. Bauer，并很快提交给高影响因子期刊。利用经典（随机运动方程的解）和量子力学（主方程的解）的分析和计算，绘制了强驱动腔光子-磁振子极化子非线性相空间中的纠缠态和非经典态等稳态特征。这一发现为在量子信息中实现自旋波铺平了道路。另一个平行方向考虑了磁振子的拓扑非平凡自旋晶格等效Haldane模型中的非线性，导致了晶格静态和动态构型中自定域自旋波模式（即孤子）的完整分类。观察到的一个独特特征是，通过增加孤子的功率，非线性引起的拓扑相变从非平凡到平凡。对这种相变的原因进行了调查，并形成了该研究的重要组成部分，该研究发表在《物理学》上。修订B 99, 134402（2019）。

The nonlinearity of spin waves in the context of microwave cavity magnonic was finalized and the findings were presented to the community at SPICE workshop in Mainz (2018) and Max-Planck Light in Erlangen (2018). The corresponding manuscript is in its final iterations between the authors M. Elyasi, Ya. M. Blanter and G. E. W. Bauer, and is soon to be submitted to a high impact factor journal. The results map out the steady states features, such as entanglement and nonclassicality, in the nonlinear phase space of the strongly driven cavity photon-magnon polaritons, using classical (from solution of stochastic equations of motion) and quantum mechanical (from solution of master equations) analysis and computation. The findings pave the way for implementing spin waves in quantum information.The other parallel direction considering nonlinearities in a topologically nontrivial spin lattice equivalent of Haldane model for magnons, led to a complete classification of self-localized spin wave modes, i.e. solitons, in static and dynamic configurations of the lattice. A unique observed feature was a nonlinearity induced topological phase change from nontrivial to trivial by increasing the power of soliton. The reason for this phase change was investigated and formed an important part of the study, which was published as Phys. Rev. B 99, 134402 (2019).