We theoretically investigate the possibility of controlling the high magneto-optical rotation without suffering an accompanying loss in transmission via the presence of a plasmonic nanostructure near the atomic five-level system. The key to optimization is the introduction of an additional degree of freedom by the location of the plasmonic nanostructure. We show that placing the plasmonic nanostructure at different distances from the atomic system allows arbitrary magneto-optical rotations with virtually 100% transmission. We numerically and analytically show that the existence of the plasmonic nanostructure near the atomic system leads to a strong adjustment of the optical properties of the quantum systems. We present a number of controlling parameters with emphasis on realizing 45° and 90° rotations in the proposed structure. The introduced model can exhibit great performances in converting TE-TM polarization and isolator applications.

中文翻译：

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在等离子体纳米结构附近具有五能级原子系统的可调谐磁光法拉第旋转

我们从理论上研究了通过在原子五能级系统附近存在等离子体纳米结构来控制高磁光旋转而不遭受传输损失的可能性。优化的关键是通过等离子体纳米结构的位置引入额外的自由度。我们表明，将等离子体纳米结构放置在距原子系统不同的距离允许任意磁光旋转，几乎 100% 传输。我们通过数值和分析表明，原子系统附近等离子体纳米结构的存在导致量子系统光学特性的强烈调整。我们提出了许多控制参数，重点是在所提出的结构中实现 45° 和 90° 旋转。