Berlin 2024 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 10: Diamond and Related Dielectric Materials I

KFM 10.3: Vortrag

Dienstag, 19. März 2024, 10:20–10:40, E 124

Ambiguous Resonances in Quantum Sensing of Single Nuclear Spins — •Lucas Tsunaki, Kseniia Volkova, Anmol Singh, and Boris Naydenov — Department Spins in Energy Conversion and Quantum Information Science (ASPIN), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany

Quantum sensing is driving technology to ever increasing levels of precision and accuracy of measurements, all based on the fact that quantum states are extremely sensitive to their environment. However, this core element is also a major source of vulnerability, as quantum sensors are subject to complex interactions leading to responses that can be confused with the actual signal to be measured. In this talk, we discuss multipulse decoupling sequences in the context of NV centers in diamond, which are used to measure single nuclear spins at room temperature. Different factors that give rise to these ambiguous resonances are considered, where we compare experimental data and simulations. We also provide a graphical user interface database tool to distinguish these ambiguous resonances from actual single nuclear spins, where over 100,000 simulations can be compared with the user’s experiments.

Keywords: Quantum Sensing; Dynamical Decoupling; Nuclear Magnetic Resonance; XY8 Spectroscopy; Nitrogen Vacancy Centers in Diamonds