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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.