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arXiv 1602.08586quant-ph
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线性探测器力灵敏度的量子噪声限

Quantum noise limit for force sensitivity of linear detectors

Yang Gao, Hopui Ho, Haixi Zhang

摘要:

我们证明了与输出光束的光学正交测量相关联的常规光机械检测器的力灵敏度的下限是所谓的极限量子极限(UQL),即,逆机械磁化率的虚部的绝对值。通过线性响应理论,我们发现任何线性探测器的力灵敏度是下界的广义UQL,这可能会击败通常的UQL通过适当的剪裁探测器-振荡器的相互作用。我们相信,我们的研究结果为提高高灵敏度检测方案的性能开辟了一个新的方向。

英文摘要:

We prove that the force sensitivity of the conventional optomechanical detector associated with the optical quadrature measurement of the output beam is lower bounded by the so-called ultimate quantum limit (UQL), i.e., the absolute value of the imaginary part of the inverse mechanical susceptibility. Through the linear response theory, we find that the force sensitivity of any linear detector is lower bounded by a generalized UQL, which might beat the usual UQL by properly tailoring the detector-oscillator interaction. We believe that our results open a new direction for improving the performance of high-sensitivity detection schemes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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