SAMOP 2023 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 59: Poster IV

Q 59.32: Poster

Donnerstag, 9. März 2023, 16:30–19:00, Empore Lichthof

high sensitivity magnetometry with NV centers in diamond at zero field — •Muhib Omar, Arne Wickenbrock, Dmitry Budker, Georgios Chatzidrosos, Till Lenz, Omkar Dungel, and Joseph Rebeirro — Helmholtz Institut Mainz, Deutschland

We investigate a magnetometric protocol for sensing weak ac magnetic fields inside magnetic shieldings using ensembles of Nitrogen-Vacancy (NV) centres in diamond. The aim is to utilise this sensor for zero to ultra low field NMR detection, promising improved Signal-to-Noise ratio by the smaller standoff distance to a NMR sample this type of magnetometer would allow compared to standard optically pumped magnetometers. We present a scheme to enhance photon collection to improve so called shot noise limited sensitivity of magnetic field detection of this sensor type and a scheme that would allow measuring weak ac fields stroboscopically without being limited by effects dominating at very low fields like strain and NV-NV dipolar coupling.