Large-area, tridimensional uniform microwave antenna for quantum sensing based on nitrogen-vacancy centers in diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-10-30 |
| Journal | Applied Physics Express |
| Authors | Yulei Chen, Hao Guo, Wangwang Li, Wu Da-Jin, Qiang Zhu |
| Institutions | North University of China |
| Citations | 26 |
Abstract
Section titled āAbstractāFor quantum sensing based on nitrogen-vacancy (NV) centers in diamond, microwave irradiation with uniform power density and large detection volume is necessary to achieve ultrahigh sensitivity. We demonstrate the fabrication of a double magnetic ring stereoscopic antenna used for the tridimensional uniform control of NV spin ensembles with a 4Ļ mm2 Ć 2 mm large volume. Compared with those of traditional microwave antennas (copper wire and single-loop antenna), the sensitivity of the sensor can be improved 4.93 and 9.98 times, and the linearity of the lock-in signal can be increased by 2.04 and 1.11%, respectively. Moreover, the proposed antenna can suppress the thermal noise generated by itself and is amenable to three-dimensional (3D) integration.