In our previous research, simulation showed that a quantum locking scheme with homodyne detection in sub-cavities is effective in surpassing the quantum noise limit for Deci-hertz Interferometer Gravitational Wave Observatory (DECIGO) in a limited frequency range. This time we have simulated an optical spring effect in the sub-cavities of the quantum locking scheme. We found that the optimized total quantum noise is reduced in a broader frequency band, compared to the case without the optical spring effect significantly improving the sensitivity of DECIGO to the primordial gravitational waves.

中文翻译：

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使用用于光学重力弹簧的引力波探测器进行量子锁定来减少量子噪声

在我们之前的研究中，仿真显示，子腔中具有零差检测的量子锁定方案可以有效地在有限的频率范围内超过分贝重力仪引力波天文台（DECIGO）的量子噪声限制。这次我们在量子锁定方案的子腔中模拟了光学弹簧效应。我们发现，与没有光学弹簧效应的情况相比，优化的总量子噪声在更宽的频带中降低了，从而显着提高了DECIGO对原始引力波的灵敏度。