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A scheme to generate mechanical squeezing of phonon mode in a hybrid cavity magnomechanical system composed of a yttrium iron garnet sphere and two auxiliary cavities and driven by a two‐tone laser is proposed. It is found that the strong mechanical squeezing can be generated by optimizing the ratio of blue‐detuned to red‐detuned laser amplitude. However, the mechanical squeezing can not be generated...
A scheme is proposed to cool two mechanical resonators simultaneously to the quantum ground state, whatever sideband resolution, in an optomechanical system with χ(2) nonlinear medium, where the cavity light is squeezed. By selecting the system parameters appropriately, the influence from cavity dissipation can be completely removed and the quantum backaction heating is suppressed at the same time...
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