Mainz 2026 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 34: Quantum Technologies – Sensing I
Q 34.6: Talk
Wednesday, March 4, 2026, 16:00–16:15, P 5
Time-Efficient Nanoscale NMR Using Solid-State Spin Sensors — •Tobias Spohn1, Nicolas Staudenmaier1, Philipp J. Vetter1, Timo Joas1, Thomas Unden2, Ilai Schwartz2, Philipp Neumann2, Genko Genov1, and Fedor Jelezko1 — 1Institute of Quantum Optics and Center for Integrated Quantum Science and Technology (IQST), Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany — 2NVision Imaging Technologies GmbH, Ulm D- 89081, Germany
Nuclear magnetic resonance (NMR) spectroscopy using solid-state spin sensors offers a powerful platform for detecting nuclear spins at the micro- and nanoscale. While many nanoscale experiments rely on a single sensor spin, employing spin ensembles can substantially enhance sensitivity, particularly when signals arise solely from statistically polarized nuclear spins.
Here, we introduce multipoint correlation spectroscopy, a protocol that integrates the strengths of correlation spectroscopy and quantum heterodyne detection to achieve time-efficient measurements of statistically polarized nuclear spin samples with spin ensembles at the nanoscale. We develop a theoretical framework for this method and demonstrate an experimental proof of concept using a nitrogen-vacancy center in diamond. Our implementation achieves a frequency estimation uncertainty at the single-hertz level, underscoring the potential of this technique for temporally efficient, high-precision nanoscale NMR spectroscopy.
Keywords: Nanoscale NMR spectroscopy; Nitrogen-Vacancy (NV) center; Diamond quantum sensors; Statistically polarized nuclear spins; High-precision sensing