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Q: Fachverband Quantenoptik und Photonik
Q 55: Poster VI
Q 55.31: Poster
Donnerstag, 14. März 2024, 17:00–19:00, Tent B
Mobile quantum sensing setup based on Nitrogen-Vacancy centers in diamond — •Wanrong Li1, Oliver Gerull1, Mike Johannes1, Florian Böhm1, Masazumi Fujiwara2, and Oliver Benson1 — 1Humboldt-Universität, Berlin, Germany — 2Okayama University, Okayama, Japan
Nitrogen-Vacancy (NV) defect centers in diamonds have exhibited remarkable quantum properties with diverse applications in quantum technology and sensing. Here we introduce a mobile setup designed for efficient quantum sensing such as on-site magnetometry based on the exceptional sensitivity of NVs to magnetic fields at the nanoscale. We measured the Optically Detected Magnetic Resonance (ODMR) [1] spectra of NVs, by sweeping the microwave frequency and monitoring the fluorescence signal. The positions and shapes of the dips in the spectrum provide information about the NV center’s electron spin properties, enabling precise measurement for magnetic field variations. The versatility of this setup allows for exploration not only of ensembles of NVs but also at the single NV level. Additionally, the setup enables T2 (spin-spin relaxation time) measurements [2], providing insights into the coherence times of the spin states. Looking ahead, this mobile platform has the potential to serve as a robust tool for conducting sensing in biophysics research, and other studies that strictly required on-site measurements.
References:
[1] M. Fujiwara et al., Phys. Rev. Res. 2, 043415 (2020).
[2] F. Böhm, Ph.D. thesis, Humboldt-Universität zu Berlin (2022).
Keywords: Nitrogen-Vacancy center; Diamond; Quantum sensing; Magnetometry; Mobile setup