Grating-based microcavity with independent control of resonance energy and linewidth for non-Hermitian polariton system
Grating-based microcavity with independent control of resonance energy and linewidth for non-Hermitian polariton system
复制标题
非厄米极化激元系统谐振能量和线宽独立控制的光栅微腔
DOI：
10.1063/5.0116286
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发表时间：
2022-03
影响因子：
4
通讯作者：
Jiaqi Hu;Nathanial Lydick;Zhaorong Wang;F. Jabeen;Schneider;S. Höfling;H. Deng
中科院分区：
文献类型：
--
作者：
Jiaqi Hu;Nathanial Lydick;Zhaorong Wang;F. Jabeen;Schneider;S. Höfling;H. Deng
激子-极化激子已经成为实现非厄米物理的一个新兴平台。实现通常需要对系统本征模的实部和虚部进行控制。为了达到这一目的，我们提出了一种利用亚波长光栅的微腔作为反射体的实验方法。光栅的反射率和反射位相随其几何参数的变化而变化，它们决定了偏振子模的能量和线宽。我们证明了这种方法允许很大范围的可能的极化子能量和线宽，适合于实现具有耦合模的非厄米极化子系统。
Exciton–polaritons have become an emerging platform for implementing non-Hermitian physics. The implementation commonly requires control of both the real and imaginary parts of the eigenmodes of the system. We present an experimental method to achieve this purpose using microcavities with sub-wavelength gratings as reflectors. The reflectivity and reflection phase of the grating can be changed by its geometric parameters, and they determine the energy and linewidth of the polariton modes. We demonstrate that this method allows a wide range of possible polariton energy and linewidth, suitable for implementing non-Hermitian polariton systems with coupled modes.