Robust Noise Suppression and Quantum Sensing by Continuous Phased Dynamical Decoupling

• URL: http://arxiv.org/abs/2410.15210v1
• Date: Sat, 19 Oct 2024 20:49:54 GMT
• Title: Robust Noise Suppression and Quantum Sensing by Continuous Phased Dynamical Decoupling
• Authors: Daniel Louzon, Genko T. Genov, Nicolas Staudenmaier, Florian Frank, Johannes Lang, Matthew L. Markham, Alex Retzker, Fedor Jelezko,
• Abstract summary: We propose and demonstrate experimentally continuous phased dynamical decoupling (CPDD) CPDD does not use short pulses, making it suitable for experiments with limited driving power or nuclear magnetic resonance at high magnetic fields. We successfully apply our method to nanoscale nuclear magnetic resonance and combine it with quantum heterodyne detection, achieving $mu$Hz uncertainty in the estimated signal frequency for a 120 s measurement.
• Score: 1.4722326430563792
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• Abstract: We propose and demonstrate experimentally continuous phased dynamical decoupling (CPDD), where we apply a continuous field with discrete phase changes for quantum sensing and robust compensation of environmental and amplitude noise. CPDD does not use short pulses, making it particularly suitable for experiments with limited driving power or nuclear magnetic resonance at high magnetic fields. It requires control of the timing of the phase changes, offering much greater precision than the Rabi frequency control needed in standard continuous sensing schemes. We successfully apply our method to nanoscale nuclear magnetic resonance and combine it with quantum heterodyne detection, achieving $\mu$Hz uncertainty in the estimated signal frequency for a 120 s measurement. Our work expands significantly the applicability of dynamical decoupling and opens the door for a wide range of experiments, e.g., in Nitrogen-Vacancy centers, trapped ions or trapped atoms.

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