Optically detected nuclear magnetic resonance of coherent spins in a molecular complex

• URL: http://arxiv.org/abs/2509.01467v1
• Date: Mon, 01 Sep 2025 13:36:46 GMT
• Title: Optically detected nuclear magnetic resonance of coherent spins in a molecular complex
• Authors: Evgenij Vasilenko, Vishnu Unni Chorakkunnath, Jeremias Resch, Nicholas Jobbitt, Diana Serrano, Philippe Goldner, Senthil Kumar Kuppusamy, Mario Ruben, David Hunger,
• Abstract summary: Nuclear magnetic resonance (NMR) is a powerful tool for applications ranging from chemical analysis to quantum information processing.<n>We report optical readout of coherently controlled nuclear spins in a europium-based molecular crystal.
• Score: 0.036116808275150965
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Nuclear magnetic resonance (NMR) is a powerful tool for applications ranging from chemical analysis to quantum information processing. Achieving optical initialization and detection of molecular nuclear spins promises new opportunities - including improved NMR signals at low magnetic field, sensitivity down to the single-molecule level, and full access to atomically precise molecular architectures for quantum technologies. In this study, we report optical readout of coherently controlled nuclear spins in a europium-based molecular crystal. By harnessing ultra-narrow optical transitions, we achieve optical initialization and detection of nuclear spin states. Through radio-frequency driving, we address two nuclear quadrupole resonances, characterized by narrow inhomogeneous linewidths and a distinct correlation with the optical transition frequency. We implement Rabi oscillations, spin echo and dynamical decoupling techniques, achieving nuclear spin quantum coherence with a lifetime of up to 2 ms. These results highlight the capabilities of optically detected NMR (ODNMR) and underscore the potential of molecular nuclear spins for quantum information processing.

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