Enhancing optomechanical force sensing via precooling and quantum noise cancellation |
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Authors: | Tesfay Gebremariam Ye-Xiong Zeng Mojtaba Mazaheri Chong Li |
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Affiliation: | Department of Physics;School of Physics;Department of Basic Science |
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Abstract: | We theoretically investigate optomechanical force sensing via precooling and quantum noise cancellation in two coupled cavity optomechanical systems. We show that force sensing based on the reduction of noise can be used to dramatically enhance the force sensing and that the precooling process can effectively improve the quantum noise cancellation. Specifically, we examine the effect of optomechanical cooling and noise reduction on the spectral density of the noise of the force measurement; these processes can significantly enhance the performance of optomechanical force sensing, and setting up the system in the resolved sideband regime can lead to an optimization of the cooling processes in a hybrid system. Such a scheme serves as a promising platform for quantum back-action-evading measurements of the motion and a framework for an optomechanical force sensor. |
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Keywords: | hybrid optomechanical system coherent quantum noise cancellation force sensing |
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