提高未来引力波探测器灵敏度的负光惯量
Negative optical inertia for enhancing the sensitivity of future gravitational-wave detectors
摘要：
我们考虑用双光弹簧来提高未来引力波探测器的灵敏度。当两个载体的功率、失谐量和带宽选择适当时，双光学弹簧的作用可以描述为“负惯性”，它抵消了测试质量的正惯性，从而提高了它们对引力波的响应。这使我们能够通过信号放大而不是噪声消除，在宽频带上超过自由质量标准量子极限（SQL），这是迄今为止为引力波探测器考虑的所有宽带SQL拍频方案的情况。这种信号放大方案的优点在于它们比噪声消除方案更不易受光损耗的影响。我们表明，这是可行的，以证明这种效果与{ \it金高光功率测试设备}，它最终可以在未来先进的GW探测器实现。
英文摘要：
We consider enhancing the sensitivity of future gravitational-wave detectors by using double optical spring. When the power, detuning and bandwidth of the two carriers are chosen appropriately, the effect of the double optical spring can be described as a "negative inertia", which cancels the positive inertia of the test masses and thus increases their response to gravitational waves. This allows us to surpass the free-mass Standard Quantum Limit (SQL) over a broad frequency band, through signal amplification, rather than noise cancelation, which has been the case for all broadband SQL-beating schemes so far considered for gravitational-wave detectors. The merit of such signal amplification schemes lies in the fact that they are less susceptible to optical losses than noise cancelation schemes. We show that it is feasible to demonstrate such an effect with the {\it Gingin High Optical Power Test Facility}, and it can eventually be implemented in future advanced GW detectors.
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