スピントロニクスにおける量子コヒーレンス（理論）

自旋电子学中的量子相干性（理论）

• 批准号: 16F16325
• 负责人: Bauer Gerrit
• 金额: $ 0.9万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2016
• 资助国家: 日本
• 起止时间: 2016-11-07 至 2019-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16F16325/
• 关键词: Magnon; Cavity; Microwave; Nonlinearity; Soliton; Topology; Optical; Non-classical; Entanglement; Non-cassical

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).

微波腔磁子背景下的自旋波的非线性已经完成，并在美因茨的SPICE研讨会(2018年)和埃尔兰根的Max-Planck Light研讨会(2018年)上向社区提交了研究结果。相应的手稿在作者M.Elyasi，Ya之间的最后迭代中。M.Blanter和G.E.W.Bauer，并将很快提交给一本高影响因子期刊。利用经典(从随机运动方程的解)和量子力学(从主方程的解)的分析和计算，揭示了强驱动腔光子-磁振子非线性相空间中的稳态特征，如纠缠和非经典。这些发现为实现量子信息中的自旋波铺平了道路。另一个平行方向考虑了磁子的霍尔丹模型的拓扑非平凡自旋晶格中的非线性，导致了晶格的静态和动态组态中的自旋波模的完全分类，即孤子。一个独特的观察特征是，通过增加孤子的功率，非线性诱导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，并构成了这项研究的重要组成部分，该研究发表在《物理》杂志上。B修订版99,134402(2019年)。

项目成果

Kavli Institute of Nanoscience, TU Delft(オランダ)

代尔夫特理工大学卡维利纳米科学研究所（荷兰）

Magnetic anisotropies in optomagnonics

光磁学中的磁各向异性

• 发表时间: 2017
• 作者: Malek MA, Hossain M;Hossain MA;Reza MH and Ahmed MS;Mehrdad Elyasi and Gerrit E. W. Bauer
• 通讯作者: Mehrdad Elyasi and Gerrit E. W. Bauer

Topologically nontrivial magnonic solitons

拓扑非平凡磁孤子

• DOI: 10.1103/physrevb.99.134402
• 发表时间: 2019
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Elyasi Mehrdad;Sato Koji;Bauer Gerrit E. W.
• 通讯作者: Bauer Gerrit E. W.

Control of coupling among magnets in the cavity using qubit frequency and state

使用量子位频率和状态控制腔内磁体之间的耦合

• 发表时间: 2017
• 作者: Hasan Mohammad Monirul;Malek Mohammad Abdul;Mehedad Elyasi
• 通讯作者: Mehedad Elyasi

Light scattering by magnons in whispering gallery mode cavities

• DOI: 10.1103/physrevb.96.094412
• 发表时间: 2017-06
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Sanchar Sharma;Y. Blanter;G. Bauer