Search for Ultralight Dark Matter with a Frequency Adjustable Diamagnetic Levitated Sensor  

作　　者：李睿 林劭春 张亮 段昌奎 黄璞 杜江峰 Rui Li;Shaochun Lin;Liang Zhang;Changkui Duan;Pu Huang;Jiangfeng Du(CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China;CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China;National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University,Nanjing 210093,China)

机构地区：[1]CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China [2]CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China [3]National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University,Nanjing 210093,China

出　　处：《Chinese Physics Letters》2023年第6期104-108,共5页中国物理快报（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.12205291,12075115,12075116,11890702,and 12150011);the Fundamental Research Funds for the Central Universities;Anhui Provincial Natural Science Foundation(Grant No.2208085QA16)。

摘　　要：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 E¨ot–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 frequencyω0 could be adjusted from 0.1 Hz to 100 Hz.The limits of the coupling constant gB-Lare 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.

关 键 词：utilize LIGHT TORSION 

分 类 号：P145.9[天文地球—天体物理] P111[天文地球—天文学]