Funded by the National Natural Science Foundation of China, a set of experimental research apparatus for atomic spin-based ultrasensitive magnetic field and inertia measurement was successfully developed under the joint efforts of a Beihang interdisciplinary research team and other five teams.
The Beihang team consists of Academician Fang Jiancheng, Academician Jiang Lei, Prof. Fan Yubo, etc. The five groups of collaborators are the team of Academician Chu Junhao from East China Normal University, Prof. Zhang Tiancai’s team from Shanxi University, Dr. Wang Chunru’s team from the Institute of Chemistry of the Chinese Academy of Sciences (CAS) , Dr. Liu Wuming’s team from the Institute of Physics of CAS, Dr. Zhang Jifeng’s team from the Academy of Mathematics and Systems Science of CAS.
Ultrasensitive magnetic field and inertia measurement apparatus is needed for breakthroughs in fields like electric dipole moment measurement, brain science, geology and high-precision inertial navigation, and atomic spin is one way to achieve such ultrasensitive measurement. Theoretically, this method can significantly outperform the current ones in terms of sensitivity.
Working in this direction, the researchers mastered a number of key technologies innovatively and succeeded in developing a set of experimental research apparatus for atomic spin-based ultrasensitive magnetic field and inertia measurement. The set consists of three sub-platforms (Fig. 1), whose indices all surpass the highest ones ever reported domestically and abroad. On the basis of this set, next-generation research apparatus with higher sensitivity will be developed at Zhejiang Lab as part of the construction of large scientific facilities.
Fig. 1 The set of apparatus for atomic spin-based ultrasensitive magnetic field and inertia measurement developed in the project: (a) the spin-exchange relaxation free (SERF) ultrasensitive magnetic field measurement platform, (b) the SERF ultrasensitive inertia measurement platform and (c) the inertia measurement platform of structure-confined dielectric material and embedded atom manipulation
The research findings of the project have been put into application step by step and achievements at the current stage have been made (Fig. 2). The success of this project effectively boosts the development of quantum precision measurement and sensing technologies.
Fig. 2 Applications of the project: (a) integrated functional magnetic imaging of the brain and heart, (b) measurement of new interaction forces, and (c) a prototype of miniaturized atomic spin gyroscope
More information of the project:
Key technologies:
https://ieeexplore.ieee.org/abstract/document/8668799
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.94.052705
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-27-8-10787）
Applications:
https://aip.scitation.org/doi/abs/10.1063/1.5018015
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.261803
Reported by Tao Fei
Reviewed by Wang Rongqiao
Edited by Jia Aiping
Translated by Li Mingzhu
