Robust High-Dynamic-Range Vector Magnetometry via Nitrogen-Vacancy Centers in Diamond

Abstract

We demonstrate a robust, scale-factor-free vector magnetometer, which uses a closed-loop frequency-locking scheme to simultaneously track Zeeman-split resonance pairs of nitrogen-vacancy (NV) centers in diamond. Compared with open-loop methodologies, this technique is robust against fluctuations in temperature, resonance linewidth, and contrast; offers a three-order-of-magnitude increase in dynamic range; and allows for simultaneous interrogation of multiple transition frequencies. By directly detecting the resonance frequencies of NV centers aligned along each of the diamond's four tetrahedral crystallographic axes, we perform full vector reconstruction of an applied magnetic field.

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• Sub-nanotesla magnetometry with a fibre-coupled diamond sensor
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• DC Magnetometry at the $T_2$ Limit
• Nanoscale vector AC magnetometry with a single nitrogen-vacancy center in diamond
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• Broadband loop gap resonator for nitrogen vacancy centers in diamond
• Geometric phase magnetometry using a solid-state spin
• Demonstration of vector magnetic field sensing by simultaneous control of nitrogen-vacancy centers in diamond using multi-frequency microwave pulses
• Quantum optimal control using phase-modulated driving fields
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• Hamiltonian Engineering with Constrained Optimization for Quantum Sensing and Control
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• Quantum thermodynamic derivation of the energy resolution limit in magnetometry
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• On the Road with a Diamond Magnetometer
• Performance Evaluation of a Diamond Quantum Magnetometer for Biomagnetic Sensing: A Phantom Study
• Vector detection of AC magnetic fields by Nitrogen-Vacancy centers of single orientation in diamond
• Endoscopic fiber-coupled diamond magnetometer for cancer surgery
• Magnetometry with Broadband Microwave Fields in Nitrogen-Vacancy Centers in Diamond
• MRI Simulation and Reconstruction Framework for Magnetic Vector Fields
• Imaging of microwave magnetic field orientation using continuous-wave experiments on nitrogen-vacancy centers in diamond