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论文类型：期刊论文

发表时间：2020-04-01

发表刊物：ANNALEN DER PHYSIK

收录刊物：SCIE

卷号：532

期号：4

ISSN号：0003-3804

关键字：high dissipation; optomechanical system; strong mechanical squeezing

摘要：In the conventional scheme of generating strong mechanical squeezing by the joint effect between mechanical parametric amplification and sideband cooling, the resolved sideband condition is required so as to overcome the quantum backaction heating. In the unresolved sideband regime, to suppress the quantum backaction, a chi((2)) nonlinear medium is introduced to the cavity. The result shows that the quantum backaction heating effect caused by unwanted counter-rotating term can be completely removed. Hence, the strong mechanical squeezing can be obtained even for the system far from the resolved-sideband regime.