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Q: Fachverband Quantenoptik und Photonik

Q 29: Poster – Quantum Technologies I

Q 29.26: Poster

Dienstag, 3. März 2026, 17:00–19:00, Philo 2. OG

Design and optimisation of microantenna for quantum sensor — •Anish Thomas, Alena Erlenbach, Stefan Johansson, Dennis Lönard, Jonas Gutsche, and Artur Widera — RPTU University Kaiserslautern Landau

Nitrogen-Vacancy(NV) centers in diamond are defects with spin characteristics that serve as highly sensitive magnetometers. This makes them suitable for quantum sensing applications, such as magnetic imaging of biological specimens and study of other quantities such as electric fields, temperature and pressure. Initializing these spin state of these centers requires a strong, homogenous magnetic field, emitted by a micro antenna structure on the tip of an endoscopic fiber at the microwave near-field range. This study reports on simulations conducted of the antenna structure with different geometries to analyze the magnetic field within the NV diamond volume with varying parameters. With this, one can calculate, map out and optimize measurable Rabi oscillations with appropriate impedance matched conditions.

Keywords: NV centers; antenna design; Rabi oscillations; impedance matching