Robust Noise Suppression and Quantum Sensing by Continuous Phased Dynamical Decoupling

• DOI: 10.48550/arxiv.2410.15210
• Publication Date: 2024-10-19
• Authors: Daniel Louzon; Genko T. Genov; Nicolas Staudenmaier; Florian Frank; Johannes Lang; Matthew Markham; Alex Retzker; Fedor Jelezko
• Keywords: Dynamical decoupling; Decoupling (probability); Quantum sensor

We propose and demonstrate experimentally continuous phased dynamical decoupling (CPDD), where we apply a field with discrete phase changes for quantum sensing robust compensation of environmental amplitude noise. CPDD does not use short pulses, making it particularly suitable experiments limited driving power or nuclear magnetic resonance at high fields. It requires control the timing changes, offering much greater precision than Rabi frequency needed in standard schemes. successfully our method to nanoscale combine heterodyne detection, achieving $\mu$Hz uncertainty estimated signal 120 s measurement. Our work expands significantly applicability opens door wide range experiments, e.g., Nitrogen-Vacancy centers, trapped ions atoms.