论文标题
通过光损失接近量子限制的宽带信号回收方案
A Broadband Signal Recycling Scheme for Approaching the Quantum Limit from Optical Losses
论文作者
论文摘要
量子噪声限制了激光干涉重力波检测器的灵敏度。鉴于最新的光学元件，光损耗定义了最佳量子限制检测器灵敏度的下限。在这项工作中，我们提出了一个宽带信号回收方案，该方案通过将信号回收腔转换为使用活动的光学机械滤波器将信号回收腔转换为宽带信号放大器，从而提供了潜在的解决方案。我们将使用[Phys.Rev.Lelett.115.211104（2015）]中的先前的白光腔与以前的白光腔方案相比，将显示这种方案的差异和优势。缺点是新方案更容易受到机械振荡器的热噪声的影响。
Quantum noise limits the sensitivity of laser interferometric gravitational-wave detectors. Given the state-of-the-art optics, the optical losses define the lower bound of the best possible quantum-limited detector sensitivity. In this work, we come up with a broadband signal recycling scheme which gives potential solution to approaching this lower bound by converting the signal recycling cavity to be a broadband signal amplifier using an active optomechanical filter. We will show the difference and advantage of such a scheme compared with the previous white light cavity scheme using the optomechanical filter in [Phys.Rev.Lett.115.211104 (2015)]. The drawback is that the new scheme is more susceptible to the thermal noise of the mechanical oscillator.
