Search for Ultralight Dark Matter with a Frequency Adjustable Diamagnetic Levitated Sensor
Rui Li1,2, Shaochun Lin1,2, Liang Zhang1,2, Changkui Duan1,2, Pu Huang3*, and Jiangfeng Du1,2
1CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China 2CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China 3National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
Abstract：Among several dark matter candidates, bosonic ultra-light (sub-meV) dark matter is well motivated because it could couple to the Standard Model and induce new forces. Previous MICROSCOPE and Eöt–Wash torsion experiments have achieved high accuracy in the sub-1 Hz region. However, at higher frequencies there is still a lack of relevant experimental research. We propose an experimental scheme based on the diamagnetic levitated micromechanical oscillator, one of the most sensitive sensors for acceleration sensitivity below the kilohertz scale. In order to improve the measurement range, we utilize a sensor whose resonance frequency $\omega_0$ could be adjusted from 0.1 Hz to 100 Hz. The limits of the coupling constant $g_{\scriptscriptstyle B-L}$ are improved by more than 10 times compared to previous reports, and it may be possible to achieve higher accuracy by using the array of sensors in the future.
. [J]. 中国物理快报, 2023, 40(6): 69502-.
Rui Li, Shaochun Lin, Liang Zhang, Changkui Duan, Pu Huang, and Jiangfeng Du. Search for Ultralight Dark Matter with a Frequency Adjustable Diamagnetic Levitated Sensor. Chin. Phys. Lett., 2023, 40(6): 69502-.
2023, Vol. 40 
