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Stochastic Resonance in a Single-Ion Nonlinear Mechanical Oscillator |
| Tai-Hao Cui1,2†, Ji Li3†, Quan Yuan1,2†, Ya-Qi Wei4, Shuang-Qing Dai1,2, Pei-Dong Li1,2, Fei Zhou1,3, Jian-Qi Zhang1*, Liang Chen1,3*, and Mang Feng1,3,5* |
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy of Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
2University of Chinese Academy of Sciences, Beijing 100049, China
3Research Center for Quantum Precision Measurement, Guangzhou Institute of Industry Technology, Guangzhou 511458, China
4Laboratory of Quantum Science and Engineering, South China University of Technology, Guangzhou 510641, China
5Department of Physics, Zhejiang Normal University, Jinhua 321004, China
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| Cite this article: |
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Tai-Hao Cui, Ji Li, Quan Yuan et al 2023 Chin. Phys. Lett. 40 080501 |
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Abstract Stochastic resonance is a counterintuitive phenomenon amplifying the weak periodic signal by application of external noise. We demonstrate the enhancement of a weak periodic signal by stochastic resonance in a trapped-ion oscillator when the oscillator is excited to the nonlinear regime and subject to an appropriate noise. Under the full control of the radio-frequency drive voltage, this amplification originates from the nonlinearity due to asymmetry of the trapping potential, which can be described by a forced Duffing oscillator model. Our scheme and results provide an interesting possibility to make use of controllable nonlinearity in the trapped ion, and pave the way toward a practical atomic sensor for sensitively detecting weak periodic signals from real noisy environment.
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Received: 07 April 2023
Published: 04 August 2023
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| PACS: |
05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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07.07.Df
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(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
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