Investigation and Application of Pulse Shaping to High-Frequency Electron Paramagnetic Resonance (EPR) / Zero-field Optically Detected Magnetic Resonance (ODMR) Spectroscopy

在化学/化学测量与成像和物理/量子信息科学项目的支持下，南加州大学的高桥教授和他的团队正在改进磁共振光谱技术--表征化学系统的结构和运动/变化(动力学)的重要工具。他们正在努力改善我们对物质能量状态的理解和控制，以提高探测化学体系的灵敏度和细节水平。高桥教授还在开发培训研究生和本科生量子信息科学原理、磁共振光谱学和纳米技术的课程。该团队为南洛杉矶社区的高中生和小学生加强了科学、技术、工程和数学(STEM)教育计划。脉冲电子顺磁共振(EPR)光谱可以提供关于分子结构和动力学的详细信息。与核磁共振光谱学一样，脉冲EPR光谱学在高磁场和高频率下变得更加强大。脉冲EPR的光谱分辨率、自旋极化、灵敏度和时间分辨率都随着磁场和相应的Larmor进动频率的增加而增加。然而，由于技术上的挑战，高场/高频脉冲电子顺磁共振的测量科学还有待探索。在这个项目中，高桥教授利用高速任意波形发生器(AWG)来改进量子控制，研究AWG驱动的脉冲EPR在高场和高频下的测量科学和应用。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

With support from the Chemistry/Chemical Measurement & Imaging and Physics/Quantum Information Sciences programs, Professor Takahashi and his group at the University of Southern California are improving magnetic resonance spectroscopic techniques - important tools for characterizing the structure and motions/changes (dynamics) of chemical systems. They are working to improve our understanding and control of the energy states of matter in order to enhance the sensitivity and level of detail with which chemical systems can be probed. Professor Takahashi is also developing programs to train graduate and undergraduate students in the principles of quantum information science, magnetic resonance spectrometry, and nanotechnology. The team enhances programs of science, technology, engineering and math (STEM) education for high school and elementary school students in the South Los Angeles community.Pulsed electron paramagnetic resonance (EPR) spectroscopy can provide detailed information about molecular structure and dynamics. Like nuclear magnetic resonance spectroscopy, pulsed EPR spectroscopy becomes more powerful at high magnetic fields and frequencies. The spectral resolution, spin polarization, sensitivity, and time resolution of pulsed EPR all increase with increasing magnetic field and the associated Larmor precession frequency. However, the measurement science of high field/frequency pulsed EPR has yet to be explored due to technological challenges. In this project, Professor Takahashi is utilizing a high-speed arbitrary waveform generator (AWG) for improvement of quantum control and investigation of the measurement science and applications of AWG-driven pulsed EPR at high fields and frequencies.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.