Abstract：We study a dynamic mechanism to passively suppress the thermal noise of a micromechanical resonator through an intrinsic self-feedback that is genuinely non-Markovian. We use two coupled resonators, one as the target resonator and the other as an ancillary resonator, to illustrate the mechanism and its noise reduction effect. The intrinsic feedback is realized through the dynamics of coupling between the two resonators: the motions of the target resonator and the ancillary resonator mutually influence each other in a cyclic fashion. Specifically, the states that the target resonator has attained earlier will affect the state it attains later due to the presence of the ancillary resonator. We show that the feedback mechanism will bring forth the effect of noise suppression in the spectrum of displacement, but not in the spectrum of momentum.
出版日期: 2008-09-05
引用本文:
. Noise suppression for micromechanical resonator
via intrinsic dynamic feedback[J]. Frontiers of Physics in China - Selected Publications from Chinese Universities, 2008, 3(3): 294-305.
IAN Hou, GONG Zhi-rui, SUN Chang-pu. Noise suppression for micromechanical resonator
via intrinsic dynamic feedback. Front. Phys. , 2008, 3(3): 294-305.
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