Integrated microwave cavity and antenna to improve the sensitivity of diamond NV center spin-based sensors
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-09-24 |
| Journal | Applied Physics Express |
| Authors | Yuwan Wang, Yusong Liu, Hao Guo, Xingcheng Han, Anjiang Cai |
| Institutions | North University of China, Xiāan University of Architecture and Technology |
| Citations | 9 |
Abstract
Section titled āAbstractāA microwave (MW)-cavity antenna was designed to manipulate the spin state in diamond. It consists of an Ī© antenna and a MW cavity with a thickness of 0.35 mm and a Q-value of 65. The MW intensity increased 12 times compared to that of the Ī© antenna. The size of the homogeneity area is and the heterogeneity is less than 2.3%. Hence, more spin structures in large-sized diamonds with a high concentration can be homogeneously excited. As applied in the spin-based magnetometer, the sensitivity increased 13 times, and the noise reduced to It paves the way for the development of highly sensitive spin-based sensors.