Low frequency gravitational wave detection with ground-based atom interferometer arrays
Low frequency gravitational wave detection with ground-based atom interferometer arrays
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DOI：
10.1103/physrevd.93.021101
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发表时间：
2016-01-15
影响因子：
5
通讯作者：
Bouyer, P.
中科院分区：
文献类型：
--
作者：
Chaibi, W.;Geiger, R.;Bouyer, P.
提出了一种基于原子干涉仪（AI）相关阵列的几赫兹以下引力波（GW）探测新策略。我们的建议使我们能够减少牛顿噪声（NN），这限制了所有地面GW探测器低于几赫兹，包括以前的原子干涉仪为基础的概念。使用长基线AI梯度仪阵列产生NN的几个估计，因此可以通过统计平均来减少其影响。考虑到当前光学探测器的km基线，可以实现因子为2的NN抑制，并使用现有AI阵列几何形状进行测试。利用重力加速度噪声的相关性，我们表明，一个十倍或更多的NN拒绝是可能的专用配置。考虑到保守的NN模型和冷原子技术的当前发展，我们表明在0.3 - 3 Hz频带中低于1 x 10（-19）/root Hz的应变灵敏度是可以达到的，在2 Hz处的峰值灵敏度为3 x 10（-23）/root Hz。我们提出的配置可以将现有探测器的观测窗口延长十年，填补地基和天基仪器之间的差距。
We propose a new detection strategy for gravitational waves (GWs) below a few hertz based on a correlated array of atom interferometers (AIs). Our proposal allows us to reduce the Newtonian noise (NN), which limits all ground based GW detectors below a few hertz, including previous atom interferometry-based concepts. Using an array of long baseline AI gradiometers yields several estimations of the NN, whose effect can thus be reduced via statistical averaging. Considering the km baseline of current optical detectors, a NN rejection of a factor of 2 could be achieved and tested with existing AI array geometries. Exploiting the correlation properties of the gravity acceleration noise, we show that a tenfold or more NN rejection is possible with a dedicated configuration. Considering a conservative NN model and the current developments in cold atom technology, we show that strain sensitivities below 1 x 10(-19)/root Hz in the 0.3 - 3 Hz frequency band can be within reach, with a peak sensitivity of 3 x 10(-23)/root Hz at 2 Hz. Our proposed configuration could extend the observation window of current detectors by a decade and fill the gap between ground-based and space-based instruments.