Freiburg 2024 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 55: Poster VI

Q 55.18: Poster

Donnerstag, 14. März 2024, 17:00–19:00, Tent B

Double imaging and stray light suppression for a multi species Paul trap for quantum computing — •Ernst Alfred Hackler, Pedram Yaghoubi, Florian Köppen, Hendrik Siebeneich, and Christof Wunderlich — Department of Physics, School of Science and Technology, University of Siegen, 57068 Siegen, Germany

Multi-species ion crystals are useful, for example, for quantum information processing with trapped ions or for quantum logic spectroscopy. Here, we report on the development and performance of an imaging system for mixed ion crystals of Barium and Ytterbium ions. Since the wavelengths of the resonance fluorescence of these two ion species are far apart (369 nm and 493 nm, respectively), dispersion in a refractive imaging system has to be considered. To image both species simultaneously, a double imaging system was designed and built, taking into account dispersion and chromatic aberrations. At the same time, this set-up efficiently suppresses stray light. In this poster, I present the simulation and measurement results that were used to quantify the performance of this set up.

Keywords: Double imaging; Barium; Ytterbium