Design of a High-Bandwidth Uniform Radiation Antenna for Wide-Field Imaging with Ensemble NV Color Centers in Diamond

Zhiming Li; Zhonghao Li; Zhenrong Shi; Hao Zhang; Yanling Liang; Jun Tang

doi:10.3390/mi13071007

Design of a High-Bandwidth Uniform Radiation Antenna for Wide-Field Imaging with Ensemble NV Color Centers in Diamond

Micromachines (Basel). 2022 Jun 26;13(7):1007. doi: 10.3390/mi13071007.

Authors

Zhiming Li^{1

2

3}, Zhonghao Li^{1

2

3}, Zhenrong Shi^{1

2

3}, Hao Zhang^{1

2

3}, Yanling Liang^{1

2

3}, Jun Tang^{1

2

3}

Affiliations

¹ Key Laboratory of Instrument Science and Dynamic Testing Ministry of Education, North University of China, Taiyuan 030051, China.
² Key Lab of Quantum Sensing and Precision Measurement, Taiyuan 030051, China.
³ Institute of Instrument and Electronics, North University of China, Taiyuan 030051, China.

Abstract

Radiation with high-efficiency, large-bandwidth, and uniform magnetic field radiation antennas in a large field of view are the key to achieving high-precision wide-field imaging. This paper presents a hollow Ω-type antenna design for diamond nitrogen-vacancy (NV) ensemble color center imaging. The uniformity of the antenna reaches 94% in a 4.4 × 4.4 mm² area. Compared with a straight copper antenna, the radiation efficiency of the proposed antenna is 71.8% higher, and the bandwidth is improved by 11.82 times, demonstrating the effectiveness of the hollow Ω-type antenna.

Keywords: ensemble NV color centers; high-bandwidth; radiation antenna; uniformity.

Grants and funding

This project is supported by the Special Fund for Research on National Major Research Instruments and Facilities of the National Natural Science Foundation of China (Grant Nos. 51727808, 61727804), the National Natural Science Foundation of China (Grant Nos. 62103385, 51635011, 62175219, 51821003), the Key Laboratory of Shanxi Province, China (Grant No. 201905D121001), and the Fund for Shanxi “1331 Project” Key Subjects Construction, China.