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Quantum Sensing of Magnetic Insulator based on Nitrogen Vacancy Color Center
- Zhou, Jingcheng
- Advisor(s): Du, Chunhui
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Abstract
Quantum sensing is a method to utilize quantum sensors to measure physical property quantitatively. One popular and cutting-edge platform is the nitrogen vacancy (NV) in diamonds. This dissertation presents methods about confocal and widefield NV magnetometry. Based on this technique, we probe the spin waves in Y3Fe5O12, a magnetic insulator with low damping. The robust results confirm ferromagnetic resonance and spin waves in this magnetic insulator, indicating NV as a promising quantum sensor with wide applications.