Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 24: Poster: Quantum Optics and Photonics I

Q 24.2: Poster

Dienstag, 12. März 2019, 16:30–18:30, S Fobau Physik

Optimized microstripline antenna for spin manipulation of color centers in diamond — •Oliver Opaluch, Richard Nelz, Michel Challier, and Elke Neu — Universität des Saarlandes, Fakultät NT - Fachrichtung Physik,Campus E2.6, 66123 Saarbrücken

Nitrogen Vacancy (NV) color centers in diamond are highly-suitable nanoscale quantum sensors for e.g. electrical and magnetic fields. NV-based sensing often relies on utilizing microwave antennas to manipulate the NV center’s coherent and optically addressable electron spin states [1]. Commonly, free standing wires or antennas directly structured on the diamond sample are used. Using such antennas, major challenges arise due to the radiation field’s inhomogeneity along the sample and the antenna characteristics uniformity as well as the reproducibility with respect to positioning. To overcome these obstacles we present an optimized Ω-shaped microstripline antenna design. We show that our antennas create a homogenous microwave field over a macroscopic area of approximately 600 µm in diameter, discuss their microfabrication, design optimization, implementation into experimental setups and their applicability to advanced measurement schemes.
[1] L. Rondin et al., Rep. Prog. Phys. 77 056503 (2014)