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arXiv 2102.13285cond-mat.mes-hallphysics.optics
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激子-极化激元系统中相互作用诱导的双趋肤效应

Interaction induced bi-skin effect in an exciton-polariton system

Xingran Xu, Huawen Xu, S. Mandal, R. Banerjee, Sanjib Ghosh, T. C. H. Liew

摘要:

非厄米趋肤效应可以通过前向和后向之间的非对称跳跃来实现,其中系统的所有模式都局限于有限一维晶格的一个边缘。然而,在光学系统中实现这样的非对称跳跃远非微不足道。在这里,我们从理论上表明,在一个有限的一维激子-极化激元微柱链对称跳跃,系统的固有非线性可以表现出双集肤效应,其中系统的模式是本地化在系统的两个边缘。为了说明这种模式的拓扑起源,我们计算了缠绕数。

英文摘要:

The non-Hermitian skin effect can be realized through asymmetric hopping between forward and backward directions, where all the modes of the system are localized at one edge of a finite 1D lattice. However, achieving such an asymmetric hopping in optical systems is far from trivial. Here we show theoretically that in a finite chain of 1D exciton-polariton micropillars with symmetric hopping, the inherent non-linearity of the system can exhibit a bi-skin effect, where the modes of the system are localized at the two edges of the system. To show the topological origin of such modes, we calculate the winding number.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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