By numerical simulation, we compare the performance of four speedmeter interferometer configurations with potential application in future gravitational wave detectors. In the absence of optical loss, all four configurations can be adjusted to yield the same sensitivity in a fair comparison. Once we introduce a degree of practicality in the form of lossy optics and mode mismatch, however, the situation changes: the sloshing Sagnac and the speedmeter of Purdue and Chen have almost identical performance showing smaller degradation from the ideal than the speedmeter of Freise and the speedmeter of Miao. In a further step, we show that there is a similar hierarchy in the degree of improvement obtained through the application of 10 dB squeezing to the lossy speedmeters. In this case, the sensitivity of each speedmeter improves, but it is greatest for the sloshing Sagnac and the speedmeter of Purdue and Chen, in particular in the lower part of the target frequency range.

中文翻译：

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不同晃荡速度计的比较

通过数值模拟，我们比较了四种速度计干涉仪配置的性能与未来引力波探测器的潜在应用。在没有光损耗的情况下，可以调整所有四种配置以在公平比较中产生相同的灵敏度。然而，一旦我们以有损光学和模式失配的形式引入一定程度的实用性，情况就会发生变化：晃动的 Sagnac 和 Purdue 和 Chen 的速度计具有几乎相同的性能，显示出比 Freise 的速度计更小的理想退化苗族车速表。在进一步的步骤中，我们表明通过对有损速度计应用 10 dB 压缩获得的改进程度具有相似的层次结构。在这种情况下，每个速度计的灵敏度提高，