Floquet engineering of transition metal dichalcogenides via time-resolved photoemission

通过国家科学研究所、能源材料电信研究中心（INRS-EMT）和波尔多大学（CELIA实验室）之间的这种新型国际合作，我们的目标是为未来的量子技术奠定基础。我们将研究如何使用超快激光脉冲来有效地调节量子材料的电子特性，并在超快时间尺度上驱动物质的新量子相的出现。这项前沿研究将通过结合两个互补的和独特的世界范围内的时间分辨光电发射系统在INRS和U。波尔多，从而使人们对量子材料内部的电子如何对强光激发作出反应有了前所未有的了解。这些研究工作将集中在过渡金属二硫属化物（TMD）的电子性质的光控制上，这是开发新型自旋电子学和光电器件的有前途的平台。特别是，通过利用超短激光脉冲的时间周期性，我们的目标是通过调整电子在物质内部的相互作用来设计TMD的光学和输运性质。波尔多，这将导致在量子物质的光控制的新兴领域的高素质人才的培训。此外，这项研究将为量子材料的按需控制建立新的实验协议，有效地使加拿大在下一代光电器件的设计和工程方面处于有利地位。

Through this novel international collaboration between the institut national de la recherche scientifique, Énergie Matériaux Télécommunications Research Centre (INRS-EMT), and the University of Bordeaux (CELIA lab), we aim to establish the roots for the quantum-based technology of tomorrow. We will investigate how ultrafast laser pulses can be used to effectively tune the electronic properties of quantum materials and drive the emergence of novel quantum phases of matter on ultrafast timescales. This forefront study will be enabled by combining two complementary and unique worldwide time-resolved photoemission systems at INRS and U. Bordeaux, thus granting unprecedented insights into how electrons react to intense light excitations inside quantum materials.These research efforts will focus on the light-control of the electronic properties of transition metal dichalcogenides (TMDs), which are a promising platform for developing novel spintronic and optoelectronic devices. In particular, by taking advantage of the temporal periodicity of ultrashort laser pulses, we aim to engineer the optical and transport properties of TMDs by tuning how electrons interact inside the matter on demand.This project will seed a new collaboration between INRS and U. Bordeaux, which will result in the training of highly qualified personnel in the emergent field of light-control of quantum matter. Moreover, this research will establish new experimental protocols for on-demand control of quantum materials, effectively placing Canada in a privileged position for the design and engineering of next-generation optoelectronic devices.