Superadiabatic Control of a Solid-State Spin Ensemble for Geometric Phase Quantum Sensing

Shortcuts to adiabaticity (STA) offer promising advancements in quantum sensing by overcoming the limitations of traditional adiabatic protocols. In this work, we apply superadiabatic control to an ensemble of nitrogen vacancy (NV) centers in diamond, enabling geometric-phase-based magnetometry, which circumvents the phase ambiguities present in conventional broadband magnetometry protocols such as Ramsey [1]. We demonstrate robust superadiabatic control of NV ensembles, resulting in significant speedups in geometric phase sensing protocols [1], with improved magnetic sensitivity. This approach provides high fidelity control of large (∼ 10⁸ spins), highly disordered, spin ensembles, paving the way for applications of STA across a variety of quantum platforms.

[1] K. Arai, J. Lee, C. Belthangady, D. R. Glenn, H. Zhang, and R. L. Walsworth, Nature Communications 9, 4996 (2018).