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Experimental Observation of Hidden Multistability in Nonlinear Systems
Kun Zhang1, Qicheng Zhang1, Shuaishuai Tong1
1Wuhan University, Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan 430072, China.
Physical Review Letters
|February 6, 2026
Summary
Researchers experimentally observed hidden multistability in nonlinear dynamical systems using an acoustic platform. This breakthrough allows control over elusive stable states, opening doors for advanced applications.
Area of Science:
- Nonlinear dynamics
- Acoustic metamaterials
- Quantum optics
Background:
- Multistability, the coexistence of multiple stable states, is fundamental to nonlinear dynamical systems.
- Hidden multistability, where stable states are undetectable by conventional methods, presents unique challenges and opportunities.
Purpose of the Study:
- To experimentally demonstrate hidden multistability in a programmable acoustic system.
- To investigate the control and revelation of hidden stable states.
Main Methods:
- Utilized a programmable acoustic coupled-cavity platform with competing Kerr nonlinearities.
- Employed precise parameter programming to induce semihidden and fully hidden tristabilities.
- Applied pulsed excitation to reveal and control hidden stable states.
Main Results:
- Achieved the first experimental observation of hidden multistability in an acoustic system.
- Demonstrated programmable control over semihidden and fully hidden tristabilities.
- Successfully revealed and controlled previously inaccessible hidden stable states using pulsed excitation.
Conclusions:
- The study provides crucial experimental evidence for hidden multistability in acoustic systems.
- Offers a novel method for dynamically controlling hidden states, enabling flexible transitions.
- Highlights potential applications in information storage, encryption, and safety systems.
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