Bonn 2025 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 48: Poster – Quantum Optics, Technologies, and Optomechanics

Q 48.49: Poster

Mittwoch, 12. März 2025, 17:00–19:00, Tent

Spin Control of Silicon-Vacancy Centers in Nanodiamonds — •David Opferkuch, Andreas Tangemann, Marco Klotz, and Alexander Kubanek — Institute for Quantum Optics, University Ulm, Germany

Due to presumed high scalability, spin qubits in solid state hosts are promising candidates for the realization of quantum networks. As such, negatively charged silicon-vacancy-centers (SiV-) in nanodiamond (ND) combine the good spin properties of diamond with the good optical properties of group-IV defects. We are using highly strained SiV- hosted in ND, which demonstrate orbital ground state splittings exceeding 1THz. Thus, phonon induced dephasing of the spin qubit is mitigated at liquid Helium temperatures. Here, we present our current results on electron spin characterization and control of a SiV- in ND at liquid Helium temperatures as well as the characterization and control of coupled C13 nuclear spins.

Keywords: Nanodiamond; Group-IV Defects; Silicon Vacancy; Spin Environment; Spin Control