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MO: Fachverband Molekülphysik

MO 19: Poster 3

MO 19.8: Poster

Donnerstag, 17. März 2022, 16:30–18:30, P

Observation and manipulation of long-lived electronic coherences in lanthanide complexes at room temperature — •Mirali Gheibi, Jayanta Ghosh, Cristian Sarpe, Bastian Zielinski, Tillmann Kalas, Ramela Ciobotea, Arne Senftleben, Thomas Baumert, and Hendrike Braun — Institute of Physics and CINSaT, University of Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany

The aim of SMolBits - Scalable Molecular Quantum Bits - is the realization of ideal quantum systems with long-lived levels, isolated from the environment to form quantum bits as key building blocks for advanced quantum technologies. Lanthanides are particularly promising with respect to possible applications in quantum-based information storage and gate operations at the atomic and molecular levels. Their energy levels and electronic states are barely influenced by the environment and their bonds to the ligands attached to the lanthanides. Some of them show a prominent absorption feature around 800 nm. In this research, the electronic coherences excited in lanthanide complexes by interaction with IR femtosecond laser pulses and their lifetimes using phase-locked double pulses and fluorescence detection under a confocal-microscope are investigated. An electronic coherence time of more than 600 fs for two different complexes containing Neodymium is observed. Currently, we study Rabi oscillations in these complexes. As a next step, the influence of spectrally phase-shaped femtosecond laser pulses in the non-perturbative regime onto the electronic excitation and the created coherence for quantum gate implementation is researched.