论文标题
激光诱导的在抗铁磁铁中的光子和挤压镁之间增强的耦合
Laser induced enhanced coupling between photons and squeezed magnons in antiferromagnets
论文作者
论文摘要
在本文中，我们考虑了受外部激光场的蜂窝状抗铁磁铁。获得了不依赖时间的有效哈密顿量，我们发现外部激光器对自旋操作剂的平面成分之间的交换相互作用重新归一致，并诱导了第二个邻居之间的合成Dzyaloshinskii-Moria相互作用（DMI）。前者允许控制磁化分散体的带宽，而后者则可以打破时间反转的对称性，从而在动量空间中诱导了非晶状体。系统的本征偏见对应于挤压参数取决于激光的特性的挤压镁。在研究这些自旋激发与空腔光子之间的方式时，我们获得了耦合强度，与不存在激光的情况相比，通过仔细调整激光的强度，可以通过仔细调整激光的强度来增强耦合强度。呈现通过腔体的传输图，从而允许绘制镁的分散关系。
In this paper we consider a honeycomb antiferromagnet subject to an external laser field. Obtaining a time-independent effective Hamiltonian, we find that the external laser renormalizes the exchange interaction between the in-plane components of the spin-operators, and induces a synthetic Dzyaloshinskii-Moria interaction (DMI) between second neighbors. The former allows the control of the magnon dispersion's bandwidth and the latter breaks time-reversal symmetry inducing non-reciprocity in momentum space. The eigen-excitations of the system correspond to squeezed magnons whose squeezing parameters depend on the properties of the laser. When studying how these spin excitations couple with cavity photons, we obtain a coupling strength which can be enhanced by an order of magnitude via careful tuning of the laser's intensity, when compared to the case where the laser is absent. The transmission plots through the cavity are presented, allowing the mapping of the magnons' dispersion relation.
