Project Description

Nitrogen- vacancy center (NV center) is an atomic defect in diamond. As a precision quantum sensor, it has broad applications in quantum information, quantum computation networks and magnetometry. The electronic spin in NV center can be manipulated by microwave and addressed using optical transitions. We propose a novel microwave near field antenna specifically designed for manipulation of NV centers in diamond. In the NV ensemble magnetometry, NV centers are oriented at different directions. This will result in multiple resonances with respect to the direction of the external magnetic fields. Broad bandwidth MW antenna is beneficial to efficiently excite the multiple resonances of the NV centers.Tuning and matching together with broad bandwidth can facilitate the experiments on high dynamic range magnetic field sensing and imaging via NV centers