Design of tightly linked dual ring antenna and imaging of magnetic field distribution using a diamond fiber probe

A tightly linked dual ring antenna is designed, and it is specifically tailored for uniformly coupling the microwave magnetic field to the nitrogen-vacancy (NV) center. The designed antenna operates at a center frequency of about 2.87 GHz, with a bandwidth of around 200 MHz, allowing it to address m...

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Bibliographic Details
Published in:Chinese physics B 2024-01, Vol.33 (2), p.24202-399
Main Authors: Ye, Qing-Yun, Xue, Ya-Wen, He, Fei-Yue, Zhao, Xu-Tong, Bian, Yu-Chen, Lu, Wen-Tao, Wang, Jin-Xu, Chen, Hong-Hao, Xia, Sheng-Kai, Zeng, Ming-Jing, Du, Guan-Xiang
Format: Article
Language:English
Subjects:
inhomogeneous broadening
microwave (MW) imaging
nitrogen vacancy (NV)
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Summary:A tightly linked dual ring antenna is designed, and it is specifically tailored for uniformly coupling the microwave magnetic field to the nitrogen-vacancy (NV) center. The designed antenna operates at a center frequency of about 2.87 GHz, with a bandwidth of around 200 MHz, allowing it to address multiple resonance peaks in the optically detected magnetic resonance (ODMR) spectrum in an external magnetic field. Moreover, the antenna generates a fairly uniform magnetic field in a range with a radius of 0.75 mm. High resolution imaging of the magnetic field distribution on the surface of the antenna is conducted by using a fiber diamond probe. We also investigate the effect of magnetic field uniformity on the linewidth of ODMR, so as to provide insights into reducing the inhomogeneous broadening of ODMR.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/ad0772