Freiburg 2024 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 23: Poster I

Q 23.36: Poster

Dienstag, 12. März 2024, 17:00–19:00, Tent B

Cryogenic spectroscopy of novel organic molecules doped with Yb3+ for quantum information processing applications — •Robin Wittmann¹, Jannis Hessenauer¹, Sören Schlittenhardt¹, Senthil Kumar Kuppusamy¹, Mario Ruben^1,2, and David Hunger¹ — ¹KIT, Karlsruhe, Germany — ²CNRS-Université, Strasbourg, France

Rare earth ions (REI) doped into crystals have proven to be a promising system for quantum information processing due to their long optical coherence time stemming from the shielding of the partially filled 4f electron shell by the fully occupied 5s and 5p orbitals. Yb3+ is a REI that is particularly interesting as a microwave to optical photon interface due to it being a Kramers ion with an electron spin of 1/2. Benefits of trivalent Ytterbium are its simple energy level structure consisting of only two electronic multiplets, as well as its favorable branching ratio. In addition, long electron spin coherence times were observed for Yb171 due to its zero magnetic field clock transition in low symmetry crystals. Here we investigate the optical lifetime, coherence time and optical linewidth of novel organic molecules tailored to host REIs. Measurements are done at cryogenic temperatures on ensembles of Yb3+ doped molecular crystal powder to test its viability for quantum information processing tasks. We observe narrow inhomogeneous linewidths and individually addressable subspecies sensitive to different excitation wavelengths.

Keywords: Rare earth ions; molecular materials; cryogenc spectroscopy; quantum information processing; spin photon interface