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Q: Fachverband Quantenoptik und Photonik

Q 73: Quantum Technologies – Solid State Systems

Q 73.1: Hauptvortrag

Freitag, 6. März 2026, 11:00–11:30, P 7

Microwave quantum communication with rare-earth spin ensembles — •Nadezhda Kukharchyk — Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany — School of Natural Sciences, Technische Universität München, D-85748 Garching, Germany — Munich Center for Quantum Science and Technology, D-80799 Munich, Germany

Microwave quantum communication, encompassing the development of microwave quantum key distribution (QKD), quantum microwave entanglement distribution, and compatible quantum storage elements, is a highly promising area in the evolution of radio technologies toward 6G wireless networks. In our work, we focus on the development of microwave quantum memories that are compatible with microwave quantum circuits, which play a central role in quantum computing and microwave QKD protocols.

In this talk, I will present our progress in the development of broadband microwave quantum memories based on rare-earth spin ensembles, discuss their envisioned integration with microwave QKD systems, and explore potential applications in next-generation quantum communication networks.

Keywords: quantum memory; quantum communication; rare earth spin ensembles; quantum tokens; spin resonance