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タイトル: | Broadband microwave antenna for uniform manipulation of millimeter-scale volumes of diamond quantum sensors |
著者: | Takemura, Y. Hayashi, K. Yoshii, Y. Saito, M. Onoda, S. Abe, H. Ohshima, T. Taniguchi, T. Fujiwara, M. Morishita, H. Ohki, I. Mizuochi, N. |
著者名の別形: | 竹村, 祐輝 林, 寛 藤原, 正規 森下, 弘樹 大木, 出 水落, 憲和 |
発行日: | 14-Dec-2022 |
出版者: | AIP Publishing |
誌名: | Journal of Applied Physics |
巻: | 132 |
号: | 22 |
論文番号: | 224501 |
抄録: | Quantum sensors based on nitrogen-vacancy (NV) centers in diamond are expected to demonstrate a wide variety of applications. For high-sensitivity quantum sensors with NV center ensembles, uniform manipulation of the electron spins of the NV centers in large volumes is required. In addition, a broad microwave frequency bandwidth for manipulating the NV centers' electron spin is necessary for vector magnetometry and measurement under a finite static magnetic field. Here, we demonstrate a broadband microwave antenna for uniform manipulation of millimeter-scale volumes of diamond quantum sensors. The simulation shows that the current is distributed at both edges of the loop coil of a single copper plate due to the skin effect. The loop coil acts like a Helmholtz coil, which realizes uniformity in the z-direction of the microwave magnetic field (B1). The plate structure has a higher mechanical stability, durability, and a larger heat capacity than the Helmholtz coil, due to its large volume. The antenna achieves a higher performance than previously reported antennae, with a maximal B1 of 4.5 G, a broad bandwidth of 287 ± 6 MHz, and a peak-to-peak variation of 9.2% over a 3.1 mm³ cylinder volume. These performances show that the presented antenna is suitable for manipulating solid-state spin ensembles for high-sensitivity quantum sensors. |
著作権等: | © 2022 Author(s). Published under an exclusive license by AIP Publishing. The full-text file will be made open to the public on 08 December 2023 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. |
URI: | http://hdl.handle.net/2433/279953 |
DOI(出版社版): | 10.1063/5.0128406 |
出現コレクション: | 学術雑誌掲載論文等 |
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