Parallel optically detected magnetic resonance spectrometer for dozens of single nitrogen-vacancy centers using laser-spot lattice

Mingcheng Cai; Zhongzhi Guo; Fazhan Shi; Chunxing Li; Mengqi Wang; Wei Ji; Pengfei Wang; Jiangfeng Du

doi:10.1063/5.0039110

Parallel optically detected magnetic resonance spectrometer for dozens of single nitrogen-vacancy centers using laser-spot lattice

Rev Sci Instrum. 2021 Apr 1;92(4):045107. doi: 10.1063/5.0039110.

Authors

Mingcheng Cai¹, Zhongzhi Guo¹, Fazhan Shi¹, Chunxing Li¹, Mengqi Wang¹, Wei Ji², Pengfei Wang¹, Jiangfeng Du¹

Affiliations

¹ Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China.
² Laboratory of Interdisciplinary Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.

PMID: 34243467
DOI: 10.1063/5.0039110

Abstract

We develop a parallel optically detected magnetic resonance (PODMR) spectrometer to address, manipulate, and read out an array of single nitrogen-vacancy (NV) centers in diamond in parallel. In this spectrometer, we use an array of micro-lenses to generate a 20 × 20 laser-spot lattice (LSL) on the objective focal plane and then align the LSL with an array of single NV centers. The quantum states of NV centers are manipulated by a uniform microwave field from a Ω-shape coplanar coil. As an experimental demonstration, we observe 80 NV centers in the field of view. Among them, magnetic resonance (MR) spectra and Rabi oscillations of 18 NV centers along the external magnetic field are measured in parallel. These results can be directly used to realize parallel quantum sensing and multiple times speedup compared with the confocal technique. Regarding the nanoscale MR technique, PODMR will be crucial for a high throughput single molecular MR spectrum and imaging.