From July 17 to August 1, 2023, I had the privilege of visiting the esteemed research group led by Professor Martin Zanni at the Department of Chemistry, University of Wisconsin-Madison, in Madison, Wisconsin, USA.

During my stay, I was exposed to the fundamental techniques of two-dimensional nonlinear optical simulation spectrum. I also had the opportunity to gain hands-on experience with the instrumentation and experimental processes involved in two-dimensional nonlinear spectroscopy, particularly focusing on infrared transmission two-dimensional surface-enhanced spectroscopy. In addition, I presented a report to Professor Martin Zanni's research group on the principles and phenomena related to one-dimensional linear spectroscopy. Engaging discussions ensued, covering topics such as two-dimensional twisted spectroscopy, surface-enhanced spectroscopy, and one-dimensional linear spectroscopy. These conversations were enriched by the valuable insights shared by Professor Martin Zanni and Mr. Matt Ryan.

Particularly noteworthy was the in-depth exploration of surface-enhanced spectroscopy in dimensionally distorted spectra and its potential correlation with simulation, setting the stage for potential future collaborations in this area.

My heartfelt gratitude goes to Professor Zanni, Matt, Kiera, Alexei, Shivani, and all the researchers in the group for their invaluable assistance and support during my time there. Collaborating and studying alongside you all has been an enriching experience.

I am also thankful for the financial support provided by MAPEX, which afforded me the opportunity to engage with other researchers and broaden the scope of my research.

Finally, I express profound appreciation to my doctoral supervisor, Professor Johannes Kiefer, for his unwavering support and for granting me the autonomy to explore my research interests freely. Your guidance has been instrumental, and I am deeply grateful for your assistance whenever I needed it. Thank you most sincerely.