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Coherent energy transfer in coupled nonlinear microelectromechanical resonators
Hemin Zhang1,2, Haojie Li3, Jiangkun Sun4
1MOE Key Laboratory of Micro and Nano Systems for Aerospace, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, China. zhanghm@nwpu.edu.cn.
Nature Communications
|April 24, 2025
Summary
Researchers observed periodic energy transfer in coupled nonlinear resonators. Asymmetry and nonlinearity enhance energy localization and manipulation for potential high-precision sensors.
Area of Science:
- Physics
- Nonlinear Dynamics
- Quantum Optics
Background:
- Energy decay is a universal behavior in oscillators, crucial for understanding energy transfer in resonators.
- Observing energy interactions in coupled resonators requires an ultra-low coupling rate between resonators and the environmental bath.
Purpose of the Study:
- To investigate energy transfer and localization phenomena in coupled nonlinear resonators.
- To analyze the impact of asymmetry and nonlinearity on energy transfer rates.
- To explore the potential of these systems for developing high-precision sensors.
Main Methods:
- Analysis of transient responses in coupled nonlinear resonators with a specific coupling rate (9.6 Hz).
- Utilizing time-resolved eigenstates, characterized by amplitude ratios, to quantify energy transfer and localization.
- Employing nonlinear operations to study hybrid energy manipulation.
Main Results:
- Observation of a periodic transient beating phenomenon.
- Demonstration that asymmetry-induced energy localization impacts energy transfer rates.
- Evidence that nonlinearity enhances the energy transfer rate.
- Quantitative characterization of energy transfer and localization using time-resolved eigenstates.
Conclusions:
- Coupled nonlinear resonators exhibit controllable energy transfer and localization.
- Asymmetry and nonlinearity are key factors in manipulating energy dynamics.
- This research opens avenues for developing advanced sensors based on energy transfer principles.
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