Nanoscale Vector Magnetometry with a Fiber‐Coupled Diamond Probe
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2023-07-14 |
| Journal | Advanced Quantum Technologies |
| Authors | Hangyu Liu, Wen‐Zhao Liu, Mengqi Wang, Xiangyu Ye, Pei Yu |
| Institutions | University of Science and Technology of China |
| Citations | 8 |
Abstract
Section titled “Abstract”Abstract A nanoscale vector magnetometer is demonstrated by integrating a microfabricated diamond probe with a nanopillar on top of a single‐mode optical fiber. Based on the recently developed self‐aligned patterning techniques, ≈80 nitrogen vacancies are concentrated at a 100 nm 2 area at the center of nanopillars to maximize the excitation and collection efficiencies. The spatial resolution of such a fiber‐coupled diamond magnetometer can reach 100 nm for the first time with a sensitivity of 11.27 µT/ for DC magnetic field sensing. In addition, the probe can provide deterministic oriented diamond nanopillars for simplified vector magnetometry. This fiber‐coupled diamond probe is applied to demonstrate the magnetic field imaging of charged electrodes in a confined box. These results mark a decisive step toward fiber‐based applications with nanoscale vector magnetometry capabilities.