Strong Squeezing of Duffing Oscillator in a Highly Dissipative Optomechanical Cavity System

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...

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Bibliographic Details
Published in:Annalen der Physik 2020-04, Vol.532 (4), p.n/a
Main Authors: Xiong, Biao, Li, Xun, Chao, Shi‐Lei, Yang, Zhen, Peng, Rui, Zhou, Ling
Format: Article
Language:English
Subjects:
Compressing
Cooling effects
Duffing oscillators
Heating
high dissipation
High temperature effects
optomechanical system
strong mechanical squeezing
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Summary: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 χ(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. A scheme for generating strong mechanical squeezing in a cavity optomechanical system is proposed, where a nonlinear medium is introduced to suppress the quantum backaction heating. The result shows that strong mechanical squeezing can be obtained even for the system far from the resolved‐sideband regime, which may make it possible to experimentally observe strong mechanical squeezing under the unresolved sideband condition.
ISSN:0003-3804
1521-3889
DOI:10.1002/andp.201900596