Affiliation:
1. CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences University of Science and Technology of China Hefei 230026 China
2. CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Hefei 230026 China
3. Hefei National Laboratory University of Science and Technology of China Hefei 230026 China
Abstract
AbstractA 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 nm2 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.
Funder
Chinese Academy of Sciences
National Natural Science Foundation of China
Subject
Electrical and Electronic Engineering,Computational Theory and Mathematics,Condensed Matter Physics,Mathematical Physics,Nuclear and High Energy Physics,Electronic, Optical and Magnetic Materials,Statistical and Nonlinear Physics