Quantum estimation of coupling strengths in driven-dissipative optomechanics

Abstract

We exploit local quantum estimation theory to investigate the measurement of linear and quadratic coupling strengths in a driven-dissipative optomechanical system. For experimentally realistic values of the model parameters, we find that the linear coupling strength is considerably easier to estimate than the quadratic one. Our analysis also reveals that the majority of information about these parameters is encoded in the reduced state of the mechanical element, and that the best estimation strategy for both coupling parameters is well approximated by a direct measurement of the mechanical position quadrature. Interestingly, we also show that temperature does not always have a detrimental effect on the estimation precision, and that the effects of temperature are more pronounced in the case of the quadratic coupling parameter.

arXiv comment13 pages, 6 figures, comments welcome

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Cited by in corpus (4)

• Joint quantum estimation of loss and nonlinearity in driven-dissipative Kerr resonators
• Probing of nonlinear hybrid optomechanical systems via partial accessibility
• Optomechanical systems with linear and quadratic position couplings: Dynamics and optimal estimation
• Estimation of disorders in the rest positions of two membranes in optomechanical systems