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Q: Fachverband Quantenoptik und Photonik

Q 38: Poster IV

Q 38.36: Poster

Mittwoch, 13. März 2024, 17:00–19:00, KG I Foyer

Exploring Germanium-Vacancy Centers in Diamond Cavities for a Quantum Repeater Module — •Prithvi Gundlapalli, Katharina Senkalla, Lev Kazak, Philipp Vetter, Stefan Dietel, and Fedor Jelezko — Universität Ulm

Diamond photonic cavities present a compelling architectural framework for effectively addressing individual spins associated with diamond color centers, thereby enabling the scalability of diverse quantum applications in sensing, computing, and networking. An essential prerequisite for quantum networks involves entangling color centers separated over considerable distances, necessitating the employment of quantum repeaters due to the unreliable transmission of flying qubits over such distances. Notably, group IV defects like Ge, Sn, and Pb vacancy centers within diamond exhibit promising attributes such as efficient light-matter interfaces as well as long coherence times, which are conducive to serving as candidates for quantum repeaters. We present our progress on the development of diamond photonic cavities integrated with Germanium vacancy centers (GeV) as well as simulation results that allows for efficiently building quantum registers. These will ultimately be used to develop a quantum repeater module.

Keywords: Germanium vacancy centers; Diamond photonic cavities; Quantum registers