Dynamics and Spectral Response of linear-quadratic optomechanical interaction: Effects of pure dephasing
arXiv:2501.14645 · doi:10.1088/1572-9494/adcf09
Abstract
In this manuscript, the decoherence dynamics and spectral response of an optomechanical system, with linear and quadratic couplings, is addressed. The decoherence considered arises from pure dephasing, described by the Milburn stochastic evolution of the Schrödinger equation. In the first part of the manuscript, it is shown how the decoherence rate influences the evolution of the number of phonons, and the quadrature of the mechanical resonator. In the second part of the manuscript, an attempt to look at the spectral response of the mechanical part of the system is given using non-stationary spectroscopy. It is emphasized the response of the resonator in its equilibrium position when a single photon excitation in the cavity field is prepared. Coherent states are also considered in the cavity field and the mechanical resonator. Results and discussion comparing the inclusions of the linear, quadratic, and linear-quadratic couplings are given.
arXiv comment13 pages, 6 figures
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