Phase Shear Imaging for Long-Baseline Interferometry

MAGIS和AION是用于暗物质探测的长基线原子干涉仪，并作为未来在aLIGO和LISA之间的中频范围内探测引力波的试验台。正在费米实验室和英国建造。它们通过超冷原子在垂直基线上自由落体来运行。一系列激光脉冲将原子分离成两种叠加状态，并最终将它们重新组合。返回原子之间的相位差是由自由落体时加速度的变化或基线长度的变化引起的。在研究过程中，将发展相位剪切成像技术用于这些设备的检测系统，以提高其灵敏度。这将包括一个反射平台的组装、调试和运行。使用这种技术获取的数据随后将被分析，并产生暗物质探测的初步结果。

MAGIS and AION are long-baseline atomic interferometers for the purposes of dark matter detection and act as a testbed for future gravitational wave detection in the mid-band frequency range between aLIGO and LISA. Being constructed at Fermilab and the UK. They operate by free-falling collections of ultra-cold atoms down its vertical baseline. A series of laser pulses separate the atoms into a superposition of two states and eventually recombines them. The phase differences between the returning atoms result from either a change in acceleration during the free-fall or a change in the length of the baseline. During the program of study, phase-shear imaging will be developed for the detection system of these devices to improve their sensitivity. This will include the assembly of a retro-reflection platform, its commissioning and operation. Data taken using this technique will then be analysed and initial results on dark matter detection produced.