论文标题
通过基于原子的相干噪声消除杂交腔型光学力学系统中的相干噪声消除增强的弱力传感
Enhanced weak force sensing through atom-based coherent noise cancellation in a hybrid cavity optomechanical system
论文作者
论文摘要
我们根据非线性杂交光学机械系统中的相干量子噪声消除了弱力感应。光力学腔中包含一个可移动的机械镜，固定的半透明镜，超电原子的合奏和光学参数放大器（OPA）。使用连贯的量子噪声取消（CQNC）过程，可以在所有频率下消除背部动作噪声。同样，通过调整OPA参数，可以以低于共振频率的频率抑制量子射击。在CQNC方案中，机械振荡器的阻尼速率与原子集合的阻尼率匹配，即使对于具有高质量因子的低频机械振荡器，在实验上也可以实现。消除背部动作噪声和射击噪声的抑制显着增强了力传感，从而克服了弱力传感的标准量子极限。该混合动力方案在实现量子光机电传感器和量子控制方面可以发挥重要作用。
We investigate weak force-sensing based on coherent quantum noise cancellation in a nonlinear hybrid optomechanical system. The optomechanical cavity contains a moveable mechanical mirror, a fixed semitransparent mirror, an ensemble of ultracold atoms, and an optical parametric amplifier (OPA). Using the coherent quantum noise cancellation (CQNC) process, one can eliminate the back action noise at all frequencies. Also by tuning the OPA parameters, one can suppress the quantum shot-noise at lower frequencies than the resonant frequency. In the CQNC scheme, the damping rate of the mechanical oscillator matches the damping rate of the atomic ensemble, which is experimentally achievable even for a low-frequency mechanical oscillator with a high-quality factor. Elimination of the back action noise and suppression of the shot noise significantly enhance force sensing and thus overcome the standard quantum limit of weak force sensing. This hybrid scheme can play an essential role in the realization of quantum optomechanical sensors and quantum control.
