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arXiv · 2010.14199

Searching spin-mass interaction using a diamagnetic levitated magnetic resonance force sensor

Fang Xiong·Tong Wu·Yingchun Leng·Rui Li·Changkui Duan·Xi Kong·Pu Huang·Zhengwei Li·Yu Gao·Xing Rong·Jiangfeng Du
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Abstract

Axion-like particles (ALPs) are predicted to mediate exotic interactions between spin and mass. We propose an ALP-searching experiment based on the levitated micromechanical oscillator, which is one of the most sensitive sensors for spin-mass forces at a short distance. The proposed experiment tests the spin-mass resonant interaction between the polarized electron spins and a diamagnetically levitated microsphere. By periodically flipping the electron spins, the contamination from nonresonant background forces can be eliminated. The levitated microoscillator can prospectively enhance the sensitivity by nearly $10^3$ times over current experiments for ALPs with mass in the range 4 meV to 0.4 eV.

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Fang Xiong, Tong Wu, Yingchun Leng, Rui Li, Changkui Duan, Xi Kong, Pu Huang, Zhengwei Li, Yu Gao, Xing Rong, Jiangfeng Du. 2020-10-27. Searching spin-mass interaction using a diamagnetic levitated magnetic resonance force sensor. https://doi.org/10.1103/physrevresearch.3.013205

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