Topological effects in optically anisotropic microcavities
光学各向异性微腔的拓扑效应
基本信息
- 批准号:329504356
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2016
- 资助国家:德国
- 起止时间:2015-12-31 至 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Aim of the project is the experimental realisation and theoretical understanding of topological interesting microcavities (MC), as well as the proof of protected photonic states and directed transport of photons and exciton-polaritons. The theoretical investigations of these exemplary systems here proposed are expected to form a basis for a generally new concept for the description of optical modes and their polarization in systems of low symmetry. Further, topological photonic systems are highly interesting for fundamental science as well as, regarding applications, can be expected to provide a milestone towards the realization of devices for on-chip optical data transport and processing. The capability of exciton-polaritons to build up a Bose-Einstein condensate at room temperature and above show further the potential of such topologic systems for application in quantum computing.As a general new concept, we will utilize special mode properties in optically biaxial systems, in which symmetry breaking is induced by the combination of the resonator structure and the optical anisotropy of the involved materials.Topologically non-trivial MC made out of optically anisotropic, otherwise optically linear, reciprocal and non-chiral cavity materials shall be experimentally produced, investigated and theoretically understood. The non-triviality shall be proven by means of properties (complex mode dispersion, polarization or rather pseudo-spin) of the cavity photons and exciton-polaritons. Using lateral structuring, the degeneracy of Dirac-like points shall be lifted for inducing of topological protected edge-modes and to enable corresponding transport of photons or exciton-polaritons. In this regard, the polarization state or rather the pseudo-spin of the particles is expected to be topological protected and thus can be used for experimental proof. The proposed concept does not need external fields, complicated meta-materials or per se topological non-trivial electronic systems and thus is very promising for practical applications.As based on our preliminary studies, the widely investigated and well known optically uniaxial semiconductors ZnO and GaN are very suitable as respective cavity materials. The orientation of their optical axis thereby must not be aligned parallel to the direction of the confinement of the MC. First, we will realise and investigate bare photonic MC, for the transparency spectral range of the used materials. At success, we will extend our investigations to the regime of the strong exciton-photon coupling (exciton-polaritons).
该项目的目的是在实验上实现和从理论上理解拓扑有趣的微腔,以及证明受保护的光子态以及光子和激子-偏振子的定向输运。本文提出的这些示例性系统的理论研究有望形成描述低对称性系统中光学模式及其偏振的一般新概念的基础。此外,拓扑光子系统在基础科学以及应用方面具有很高的兴趣,可以预期为实现芯片上光学数据传输和处理的设备提供一个里程碑。激子-极化激子在室温及以上形成玻色-爱因斯坦凝聚体的能力进一步显示了这种拓扑系统在量子计算中的应用潜力。作为一个普遍的新概念,我们将利用光学双轴系统中的特殊模式性质,其中对称破缺是由所涉及材料的谐振器结构和光学各向异性相结合引起的。由光学各向异性构成的拓扑非平凡MC,否则光学线性、互易和非手征的腔材料应该被实验地产生、研究和理论理解。非平凡应通过腔光子和激子-极化的性质(复模色散、偏振或更确切地说是伪自旋)来证明。利用横向结构,类狄拉克点的简并性应被解除,以诱导拓扑保护的边缘模,并使相应的光子或激子-极化子输运成为可能。在这一点上,粒子的偏振态,更确切地说,伪自旋预计是拓扑保护的,因此可以用于实验证明。该概念不需要外场,不需要复杂的超材料,也不需要本身的拓扑非平凡的电子系统,因此具有很好的实际应用前景。根据我们的初步研究,被广泛研究和著名的光学单轴半导体ZnO和GaN非常适合作为各自的腔材料。因此,它们的光轴方向不能平行于MC的限制方向。首先,我们将认识并研究裸光子MC,以获得所用材料的透明光谱范围。在成功的时候,我们将把我们的研究扩展到强激子-光子耦合(激子-极化子)的区域。
项目成果
期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Exceptional Points in the Dispersion of Optically Anisotropic Planar Microcavities
光学各向异性平面微腔色散的特殊点
- DOI:10.1109/phosst.2018.8456770
- 发表时间:2018
- 期刊:
- 影响因子:0
- 作者:Steffen Richter;Jesús Zúñiga-Pérez;Christiane Deparis;Lukas Trefflich;Heinrich-Gregor Zirnstein;Chris Sturm;Bernd Rosenow;Marius Grundmann;Rüdiger Schmidt-Grund
- 通讯作者:Rüdiger Schmidt-Grund
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Professor Dr. Ulf Peschel其他文献
Professor Dr. Ulf Peschel的其他文献
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