Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 76: Nanophotonics II
Q 76.2: Vortrag
Freitag, 14. März 2025, 14:45–15:00, WP-HS
Nonlinear SnV-Based Electrometry for Material Science at the Atomic Lattice Scale — •Gregor Pieplow1, Cem Güney Torun1, Charlotta Gurr1, Joseph H. D. Munns1, Franziska M. Herrmann1, Andreas Thies2, Tommaso Pregnolato1,2, and Tim Schröder1,2 — 1Department of Physics, Humboldt-Universität zu Berlin, 12489 Berlin, Germany — 2Ferdinand-Braun-Institut (FBH), Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany
Quantum probes embedded in solid-state materials offer new and technologically relevant insights for materials science. While nitrogen-vacancy (NV) centers in diamond are well-established as in situ magnetometers and electrometers, we propose a novel approach to electrometry using group-IV vacancies (G4V), specifically the negatively charged tin vacancy (SnV) in diamond [1]. Unlike NV centers, G4V centers exhibit reduced sensitivity to linear Stark shifts, making them less susceptible to noise from distant charges. This property enables the detection of electric fields generated by charges near the sensor, allowing for the localization of charge traps at the diamond lattice scale, even in the presence of significant noise. By employing a rapid spectroscopic method, our approach enables the monitoring of environmental dynamics and the identification and colocalization of multiple charge traps using a single sensor probe. Additionally, we quantify the impact of charge noise on the SnV's optical coherence, investigate critical material properties, and outline strategies for material optimization.
[1] Pieplow G., et al. (2024) arXiv:2401.14290v1
Keywords: electrometer; tin vacancy; diamond; quantum sensor; diamond