2D polaritons for optoelectronic devices and networks

用于光电器件和网络的二维极化子

• 批准号: EP/X017222/1
• 负责人: Oleksandr Kyriienko
• 金额: $ 25.77万
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX017222%2F1
• 关键词: 2D; polaritons; optoelectronic; devices; networks

The rate of information growth corresponds to an annual increase of 19%, reaching 100 zettabytes by the end of 2022, and novel optoelectronic tools are required for fast information processing. With perpetual generation and flow of information around, increasing the bit rates of devices that process information is imperative for sustainable future. Typically, optical signals - photons - are sent over fibre links, and that is how majority of internet traffic flows. However, photons do not interact with each other, unless they couple to a medium in which they propagate. One way to act is converting light into electronic signals, and processing signals with conventional electronics. However, in this case Ohmic losses reduce energy efficiency and processing speed is defined by electronic timescales. A distinct way to process light relies on strong light-matter coupling. When photons are coupled strongly to optical transitions and particles in semiconductors, they become hybrid light-matter particles - polaritons. Polaritons acquire nonlinearity and allow for information processing in an all-optical way. The efficiency of this process largely depends on many-body properties on materials used for building optical devices.The project aims to develop a distinct family of optoelectronic devices by exploiting many-body interactions in semiconducting bilayers. Recent results show a highly nonlinear polaritonic response in systems of transition metal dichalcogenides (TMDCs) when these 2D materials are doped with excessive charge (for instance, free electrons). In bilayer geometry, they reveal a zoo of various intralayer and interlayer quasiparticles based on bound electron-hole pairs correlated with electrons. By coupling these quasiparticles to light, we expect that strong coupling merged with many-body interactions will lead to game-changing increase of polaritonic nonlinearity. However, accessing this physics requires developing new theoretical tools that can capture strong correlations in such a system. Many other properties needed for building polaritonic circuits and processing units are yet to be explored.In the project, we aim to develop a theoretical description of 2D polaritons in transition metal dichalcogenides and propose blueprints for optoelectronic devices that use polaritonic many-body interactions. Our project is structured around three objectives.1. We will develop a theoretical description of nonlinear response in doped TMDC bilayers in order to characterise many-body interactions of 2D polaritons.2. We will study nontrivial transport properties of doped TMDC bilayers to design polaritonic circuits based on many-body interactions.3. We will use highly nonlinear polaritonic lattices in TMDC heterobilayers to develop polaritonic computational networks.As a result, we will develop the background for future 2D polaritonic devices based on highly nonlinear bilayer systems.

信息增长率对应于每年增长19％，到2022年底达到100个Zettabytes，并且需要新颖的光电工具进行快速信息处理。随着信息的永久产生和信息流，增加了处理信息的设备的比特速率对于可持续的未来至关重要。通常，光信号 - 光子 - 通过光纤链接发送，这就是大多数互联网流量流动的方式。但是，除非光子彼此相互作用，除非它们将它们融为一体传播的培养基。采取行动的一种方法是将光转换为电子信号，并使用常规电子设备处理信号。但是，在这种情况下，欧姆损失降低了能源效率，并且处理速度由电子时间表定义。处理灯的一种独特的方法取决于强度强的耦合。当光子与半导体中的光学跃迁和颗粒强烈耦合时，它们会变成杂交轻粒子 - 极性颗粒。北极星获得非线性，并允许以全面的方式处理信息处理。该过程的效率在很大程度上取决于用于构建光学设备的材料的多体性能。该项目旨在通过利用半导体双层的多体相互作用来开发独特的光电设备系列。最近的结果表明，当这些2D材料用过量电荷掺杂（例如，自由电子）时，过渡金属二核苷（TMDC）的系统中高度非线性极化反应。在双层几何形状中，它们基于与电子相关的绑定电子孔对，揭示了各种内层和层间准粒子的动物园。通过将这些准粒子耦合到亮点，我们预计强大的耦合与多体相互作用融合将导致偏光性非线性的改变。但是，访问该物理需要开发新的理论工具，以捕获这种系统中的强烈相关性。建造极化电路和加工单元所需的许多其他特性尚未探索。在该项目中，我们旨在在过渡金属二进制二进制中对2D极化物进行理论描述，并为光电设备提出蓝图，以使用偏光型多体型相互作用。我们的项目围绕三个目标结构。1。我们将在掺杂的TMDC双层中对非线性响应的理论描述，以表征2D Polaritons的多体相互作用2。我们将研究掺杂的TMDC双层的非平凡运输特性，以基于多体相互作用设计偏光电路3。我们将在TMDC Heterobilayers中使用高度非线性的偏光晶格来开发极化计算网络。结果，我们将开发基于高度非线性双层系统的未来2D极化设备的背景。

项目成果

Robust polaritons in magnetic monolayers of CrI 3

CrI 3 磁性单层中的鲁棒极化子

• DOI: 10.1103/physrevb.108.l161402
• 发表时间: 2023
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Zhumagulov Y

Nonlinear Rydberg exciton-polaritons in Cu2O microcavities

Cu2O 微腔中的非线性里德伯激子极化子

• DOI: 10.1038/s41377-024-01382-9
• 发表时间: 2024
• 期刊: Science & Applications
• 作者: Makhonin M