Ultra-light Dark Matter Searches with Atom Interferometers

超轻暗物质由一类轻玻色子候选者组成，由于它们的相空间密度大，可以被视为经典波。这样的暗物质候选者可以在物质中产生极小的随时间变化的效应。这些波动的频率由暗物质质量决定，振幅由当地暗物质密度决定，可以用量子传感器检测到。本文回顾了ULDM的一些基础知识，并介绍了原子干涉仪检测ULDM的要点，原子干涉仪是采用量子传感器进行大规模实验的最佳例子之一。我们提出了在紧凑原子干涉仪（如10m AION实验）上精确搜索标量ULDM的初步研究。随后，我们提出了DM诱导信号的详细计算，该信号可用于原子干涉测量实验，以从潜在背景或其他非DM物理信号中分离DM信号。

Ultra-light dark matter consists of a class of light bosonic candidates that can be treated as classical waves owing to their large phase space density. Such dark matter candidates can cause extremely small time-dependent effects in matter. These fluctuations, which oscillate at a frequency set by the dark matter mass and have amplitude determined by the local dark matter density, could be detected using quantum sensors. This report reviews some basics of ULDM and introduces the salient points of ULDM detection with atom interferometers, one of the best examples of a large scale experiment employing quantum sensors. We present preliminary studies of refined searches of scalar ULDM at compact atom interferometers like the 10m AION experiment. Subsequently, we present detailed calculations of a DM-induced signal that could be used in atom interferometry experiments to disentangle a DM signal from potential backgrounds or other non-DM physics signals.