I thank Prof. Stefan Willitsch agreeing to be the co-referee of my thesis and Prof. Cornelia G. Palivan for taking responsibility of chairing my defense. During the whole time I had the privilege to work with Prof. Dieter Gerlich. His deep knowledge about ion-trapping and enthusiasm for science is without equal. It was a fortunate for me and this project to have him participating. Similar words I could find for Dr. Corey Rice. He became not only a valuable colleague, but even more a very good

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... iend. Although we didn't work on the same projects he always offered a helping hand to find solutions for any problem. Special thanks also to Dr. Satrajit Chakrabarty not only for explaining me the aspects of the machine when I made my first steps with ion-trapping. I greatly enjoyed the company of Dr.