论文标题
部分可观测时空混沌系统的无模型预测
Enhanced weak force sensing based on atom-based coherent quantum noise cancellation in a hybrid cavity optomechanical system
论文作者
论文摘要
我们从理论上研究了基于连贯的量子噪声取消（CQNC）方案的弱力传感，该方案包含包含超电原子和光学参数放大器（OPA）的捕获的集合的混合腔磁力机械系统。在我们提出的系统中，可以在所有频率下以及通过正确选择OPA参数噪声频谱密度在较低频率下降低。这会导致弱力传感的显着增强，并且即使在较低的检测频率下的小输入功率也超过了标准量子极限（SQL）。我们的研究可用于基于杂化腔光学系统和宏观系统中的相干量子控制来实现力传感器。
We theoretically investigate the weak force-sensing based on coherent quantum noise cancellation (CQNC) scheme in a hybrid cavity optomechanical system containing a trapped ensemble of ultracold atoms and an optical parametric amplifier (OPA). In our proposed system the back action noise can be completely eliminated at all frequencies as well as through the proper choice of the OPA parameters noise spectral density can be also reduced at lower frequencies. This leads to the significant enhancement in the weak force sensing and also surpasses the standard quantum limit (SQL) even for small input power at lower detection frequency. Our study can be used for the realization of force sensor based on hybrid cavity optomechanical systems and for coherent quantum control in macroscopic systems.
