论文标题
通过基于空间的光原子时钟在低频范围内的潜在优势方案
A protocol of potential advantage in the low frequency range to gravitational wave detection with space based optical atomic clocks
论文作者
论文摘要
最近的一项建议描述了基于空间的引力波（GW）检测，其光学晶格原子钟[Kolkowitz等。 al。，物理。 Rev. D 94，124043（2016）] [1]。基于它们的设置，我们提出了一种新的测量方法，用于使用光学晶格原子钟以低频中的重力波检测。在我们的方法中，收集了n个连续的多普勒信号，并制定了所有这些信号的求和，以提高低频GW检测的灵敏度。特别是，改进可以通过多普勒信号的数量来调节，这相当于增加两个原子钟之间的长度。因此，即使加速度噪声导致未能实现低于频率拐点的预期改善，这可以达到相同的灵敏度，但是距离较短，即我们的结果是及时的，旨在研究与低频GW相关的物理和天体物理效应的持续发展。
A recent proposal describes space based gravitational wave (GW) detection with optical lattice atomic clocks [Kolkowitz et. al., Phys. Rev. D 94, 124043 (2016)] [1]. Based on their setup, we propose a new measurement method for gravitational wave detection in low frequency with optical lattice atomic clocks. In our method, n successive Doppler signals are collected and the summation for all these signals is made to improve the sensitivity of the low-frequency GW detection. In particular, the improvement is adjustable by the number of Doppler signals, which is equivalent to that the length between two atomic clocks is increased. Thus, the same sensitivity can be reached but with shorter distance, even though the acceleration noises lead to failing to achieve the anticipated improvement below the inflection point of frequency which is determined by the quantum projection noise. Our result is timely for the ongoing development of space-born observatories aimed at studying physical and astrophysical effects associated with low-frequency GW.
