A sensitivity-enhanced sunlight-driven quantum magnetometer via level anti-crossing
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-07-29 |
| Journal | Applied Physics Letters |
| Authors | Yunbin Zhu, Ke Jing, Xing Rong, Yijin Xie, Jiangfeng Du |
| Institutions | Zhejiang University, University of Science and Technology of China |
| Citations | 4 |
Abstract
Section titled āAbstractāNitrogen-vacancy (NV) centers in diamond have emerged as a robust room-temperature solid-state platform for weak magnetic field detection. Several NV-based magnetometers have been proposed in the past decades, but they still suffer from either low sensitivity or high power consumption. This is a challenge for sensors deployed in remote locations on Earth or in space that are not connected to the power grid. Although sunlight-driven quantum magnetometry, which does not rely on conventional energy sources, has been proposed as a possible solution, its sensitivity remains a limitation. Here, we present an impressive improvement in the sensitivity of the sunlight-driven NV-diamond quantum magnetometer. A crucial aspect of our approach involves leveraging the ground-state level anti-crossing properties of the NV centers, coupled with magnetic flux concentrators. This integration enables us to achieve a magnetic-field sensitivity of 26 pT/Hz in a laboratory environment and 49 pT/Hz when the magnetometer operates outdoors under sunlight. We also illustrate the promising potential of further improving the sensitivity to the subpicotesla level by using cutting-edge technologies. Furthermore, we reveal the capability of this quantum magnetometer as a receiver of extremely low-frequency magnetic signals and pave the way for communication applications. These advancements represent a significant leap toward attaining high-sensitivity and energy-efficient magnetic field sensing and expanding the range of possible applications for these environmentally sustainable quantum technologies.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2013 - Optical magnetic imaging of living cells [Crossref]
- 2018 - Moving magnetoencephalography towards real-world applications with a wearable system [Crossref]
- 2023 - Quantum sensors for biomedical applications [Crossref]
- 2011 - Geomagnetic Observations and Models
- 2015 - The role of SANSAās geomagnetic observation network in space weather monitoring: A review [Crossref]
- 2018 - High precision magnetometer for geomagnetic exploration onboard of the China Seismo-Electromagnetic Satellite [Crossref]
- 2019 - Eddy-current imaging with nitrogen-vacancy centers in diamond [Crossref]
- 2021 - Battery characterization via eddy-current imaging with nitrogen-vacancy centers in diamond [Crossref]
- 2015 - Subpicotesla diamond magnetometry [Crossref]
- 2021 - Diamond magnetometry and gradiometry towards subpicotesla dc field measurement [Crossref]