Theory of phase-adaptive parametric cooling

We propose an adaptive phase technique for the parametric cooling of mechanical oscillators. Our scheme calls for a sequence of periodic adjustments of the phase of a parametric modulation of the mechanical oscillator that is conditioned on measurements of its two quadratures. The technique indicate...

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書目詳細資料
Main Authors: Ghosh, Alekhya, Kumar, Pardeep, Sommer, Christian, Jimenez, Fidel G., Sudhir, Vivishek, Genes, Claudiu
其他作者: LIGO (Observatory : Massachusetts Institute of Technology)
格式: Article
語言:English
出版: American Physical Society 2024
在線閱讀:https://hdl.handle.net/1721.1/154850
實物特徵
總結:We propose an adaptive phase technique for the parametric cooling of mechanical oscillators. Our scheme calls for a sequence of periodic adjustments of the phase of a parametric modulation of the mechanical oscillator that is conditioned on measurements of its two quadratures. The technique indicates an exponential loss of thermal energy at initial high occupancies, similar in performance to other optomechanical techniques such as cold-damping or cavity self-cooling. As the quantum ground state is approached, the phase adaptive scheme leads to residual occupancies at the level of a few phonons owing to the competition between parametric amplification of quantum fluctuations and the feedback action.