Narrow-linewidth tunable laser for high-resolution spectroscopy and quantum optics

光谱学对材料的电子结构及其性质提供了非凡的见解。它已经并将继续成为低维材料发展的主要推动力，使人们能够严格理解量子过程和相互作用，并指导它们在从能量转换到固态照明的电子和光电子应用中的实现。近年来，我们由三位光谱学家组成的团队在半导体量子态的光学控制、在超强光-物质耦合状态下工作的设备的开发、太赫兹电场（包括真空）的测量以及精密光谱学的工具和方法的开发方面做出了开创性的贡献。为了支持这些活动以及新的活动，我们的团队要求配备倍频器的高度需要的连续波窄线宽可调谐Ti:S。这一重要的光谱学工具目前在理工学院是不可用的，它将使杂质缺陷、量子点和其他低维结构的高分辨率光谱学成为可能，并揭示有关电子态、它们的环境、集体现象的出现以及它们与低能激发的相互作用的关键信息。此外，这种激光器将为解决量子光学领域的几个突出机会提供手段：有效的自旋光子界面，量子体制中的激光冷却，量子光谱技术有望彻底改变我们测量原子，分子，固态和生物系统的能力。通过在量子光学前沿进行最高水平的研究，该仪器将有助于进一步提高加拿大的研究竞争力，并在吸引和培养最高质量的HQP方面发挥重要作用。

Optical spectroscopy provides extraordinary insights on the electronic structure of materials and their properties. It has been and continues to be a major driving force in the development of low-dimensional materials by enabling a rigorous understanding of quantum processes and interactions and by guiding their implementation in electronic and optoelectronic applications ranging from energy conversion to solid-state lighting. In recent years, our team composed of three spectroscopists has made seminal contributions in the optical control of quantum states in semiconductors, the development of devices operating in the ultrastrong light-matter coupling regime, the measurement of electric fields in the THz (including that of the vacuum), and the development of tools and methods for precision spectroscopy. To support these activities as wells as new ones, our team requests a highly needed continuous-wave narrow-linewidth tunable Ti:S equipped with a frequency doubler. Currently unavailable at Polytechnique, this important spectroscopy tool will enable high-resolution spectroscopy on impurity defects, quantum dots, and other low-dimensional structures and reveal critical information on electronic states, their environment, the emergence of collective phenomena, and their interactions with low-energy excitations. Furthermore, this laser will provide the means to address several outstanding opportunities in the field of quantum optics: efficient spin-photon interfaces, laser cooling in the quantum regime, and quantum spectroscopy techniques promising to revolutionize our ability to measure atomic, molecular, solid-state, and biological systems. By enabling research of the highest caliber at the forefront in quantum optics, this instrument will serve to further enhance Canada's research competitiveness and play an important role in attracting and training HQP of the highest quality.