论文标题
$ \ MATHCAL {PT} $ - 对称性破坏型腔光学磁力测定法
$\mathcal{PT}$-symmetry-breaking enhanced cavity optomechanical magnetometry
论文作者
论文摘要
$ \ Mathcal {pt} $ - 提出了对称性的增强型腔光学磁力计，这是通过监视在获得增益储备的腔腔型光学机械系统（COMS）中监视非线性四波混合（FWM）过程强度的变化来实现的。与传统的单损失com相比，当增益助剂辅助COM以$ \ MATHCAL {pt} $ - 对称阶段运行时，可以通过两个数量级来增强FWM强度。同时，磁场感应的灵敏度可以从$ 10^{ - 9} $ t增加到$ 10^{ - 11} $ t。这最初源于以下事实：在$ \ Mathcal {pt} $ - 对称性阶段，有效的损失障碍和衰减可以有效地修改。我们的工作表明，在$ \ Mathcal {pt} $ - 对称性coms中可以实现超高敏感磁力计，该com将在量子传感领域中具有广泛的应用。
$\mathcal{PT}$-symmetry-breaking enhanced cavity optomechanical magnetometer is proposed, which is achieved by monitoring the change of intensity of a nonlinear four-wave mixing (FWM) process in a gain-cavity-assisted cavity optomechanical system (COMS). Compared with the traditional single loss COMS, the FWM intensity can be enhanced by two orders of magnitude when the gain-cavity-assisted COMS operates at the $\mathcal{PT}$-symmetry-breaking phase. Meanwhile, the sensitivity of magnetic field sensing can be increased from $10^{-9}$T to $10^{-11}$T. This originally comes from the fact that the effective detuning and decay of loss-cavity can be effectively modified in the $\mathcal{PT}$-symmetry-breaking phase. Our work shows that an ultrahigh-sensitivity magnetometer can be achieved in the $\mathcal{PT}$-symmetry-breaking COMS, which will have wide applications in the field of quantum sensing.
