Sub-nanotesla sensitivity at the nanoscale with a single spin
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2023-04-20 |
| Journal | National Science Review |
| Authors | Zhiyuan Zhao, Xiangyu Ye, Shaoyi Xu, Pei Yu, Zhiping Yang |
| Institutions | Suzhou University of Science and Technology, Nanjing University |
| Citations | 21 |
Abstract
Section titled āAbstractāABSTRACT High-sensitivity detection of the microscopic magnetic field is essential in many fields. Good sensitivity and high spatial resolution are mutually contradictory in measurement, which is quantified by the energy resolution limit. Here we report that a sensitivity of 0.5 nT/$\sqrt{\rm Hz}$ at the nanoscale is achieved experimentally by using nitrogen-vacancy defects in diamond with depths of tens of nanometers. The achieved sensitivity is substantially enhanced by integrating with multiple quantum techniques, including real-time-feedback initialization, dynamical decoupling with shaped pulses and repetitive readout via quantum logic. Our magnetic sensors will shed new light on searching new physics beyond the standard model, investigating microscopic magnetic phenomena in condensed matters, and detection of life activities at the sub-cellular scale.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
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