Hannover 2020 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 13: Posters: Quantum Optics and Photonics I

Q 13.42: Poster

Montag, 9. März 2020, 16:30–18:30, Empore Lichthof

Novel approaches for scanning probe sensing using color centers in diamond at ambient conditions — •Axel Hochstetter, Richard Nelz, and Elke Neu — Universität des Saarlandes, Fakultät NT - Fachrichtung Physik, Campus E2.6, 66123 Saarbrücken

The negatively charged nitrogen vacancy (NV) color center in diamond is a bright, photo-stable dipole emitter [1]. Due to its optically addressable spin states it is used for e.g. electrical and magnetic field sensing applications. In recent years, shallowly implanted NV centers in nanopillars have been introduced as scanning probes for high resolution imaging [2]. We showcase novel approaches for these probes to life-science applications. Specifically, the coupling of NV centers via Förster Resonance Energy Transfer (FRET) [3] unlocks new possibilities for all-optical sensing, as we demonstrate using 2-dimensional materials (e.g. WSe2 and graphene). Furthermore, we outline enhanced sensing schemes, using spin-to-charge conversion for NV centers in ambient conditions. [1] Radtke et al., arXiv:1909.03719(2019). [2] Appel et al., Rev. Sci. Instrum. 87 063703 (2016). [3] Nelz et al., Adv. Quantum Technol. 1900088(2019).