US 12,474,419 B2
Device based on ensemble nitrogen-vacancy centers
Mengze Shen, Anhui (CN); Zhiping Yang, Anhui (CN); Xi Kong, Anhui (CN); Fazhan Shi, Anhui (CN); and Jiangfeng Du, Anhui (CN)
Assigned to University of Science and Technology of China, Anhui (CN)
Appl. No. 18/557,859
Filed by UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA, Anhui (CN)
PCT Filed Mar. 28, 2022, PCT No. PCT/CN2022/083333
§ 371(c)(1), (2) Date Oct. 27, 2023,
PCT Pub. No. WO2023/184076, PCT Pub. Date Oct. 5, 2023.
Prior Publication US 2024/0219485 A1, Jul. 4, 2024
Int. Cl. G01R 33/032 (2006.01)
CPC G01R 33/032 (2013.01) 8 Claims
OG exemplary drawing
 
1. A device based on ensemble nitrogen-vacancy centers, comprising:
a right-angle prism;
a dichroic parabolic condensing lens, wherein a bottom opening oblique plane of the dichroic parabolic condensing lens is fixed on an oblique plane of the right-angle prism, and the dichroic parabolic condensing lens is configured to polarize the ensemble nitrogen-vacancy centers by an incident laser and collect a fluorescence signal at the ensemble nitrogen-vacancy centers;
a diamond, wherein the diamond is a layered diamond, comprising a first face and a second face opposite to the first face, the first face is fixed on top of a paraboloid of the dichroic parabolic condensing lens, and the second face comprises the ensemble nitrogen-vacancy centers;
a Lenz lens attached to the second face and configured to converge a microwave magnetic field;
a microwave coil located above the Lenz lens and configured to apply the microwave magnetic field to the ensemble nitrogen-vacancy centers,
wherein a hole is provided at a center of the Lenz lens, and the Lenz lens is configured to measure a nuclear magnetic resonance signal of a sample in the hole.