Large amplitude mechanical coherent states and detection of weak nonlinearities in cavity optomechanics

• URL: http://arxiv.org/abs/2504.07486v1
• Date: Thu, 10 Apr 2025 06:42:48 GMT
• Title: Large amplitude mechanical coherent states and detection of weak nonlinearities in cavity optomechanics
• Authors: Wenlin Li, Paolo Piergentili, Francesco Marzioni, Michele Bonaldi, Antonio Borrielli, Enrico Serra, Francesco Marin, Francesco Marino, Nicola Malossi, Riccardo Natali, Giovanni Di Giuseppe, David Vitali,
• Abstract summary: We consider a cavity optomechanical setup and the case of the detection of a weak mechanical nonlinearity.<n>These methods can be successfully applied for measuring Duffing-like material nonlinearities, or effective nonlinear corrections associated with quantum gravity theories.
• Score: 0.028124845703363974
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The generation of large-amplitude coherent states of a massive mechanical resonator, and their quantum-limited detection represent useful tools for quantum sensing and for testing fundamental physics theories. In fact, any weak perturbation may affect the coherent quantum evolution of the prepared state, providing a sensitive probe for such a perturbation. Here we consider a cavity optomechanical setup and the case of the detection of a weak mechanical nonlinearity. We consider different strategies, first focusing on the stationary dynamics in the presence of multiple tones driving the system, and then focusing on non-equilibrium dynamical strategies. These methods can be successfully applied for measuring Duffing-like material nonlinearities, or effective nonlinear corrections associated with quantum gravity theories.

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