标题： 空间引力波探测中的原子源选择 显示英文标题

标题： Atomic source selection in space-borne gravitational wave detection

摘要： 基于原子干涉仪的天基引力波探测器的近期方案依赖于由碱土金属或具有类似电子结构的原子所特有的极窄单光子跃迁线。尽管这些原子种类具有相似性，但它们在同位素丰度、原子流、密度和温度范围、可实现的膨胀率、相互作用引起的密度限制以及技术和操作需求等关键参数上存在差异。在这项研究中，我们比较了用于原子干涉仪引力波探测的可行候选原子，对比了最有前景的原子种类，识别了相关技术里程碑，并探讨了未来空间引力波探测器的潜在源概念。 显示英文摘要

摘要： Recent proposals for space-borne gravitational wave detectors based on atom interferometry rely on extremely narrow single-photon transition lines as featured by alkaline-earth metals or atomic species with similar electronic configuration. Despite their similarity, these species differ in key parameters such as abundance of isotopes, atomic flux, density and temperature regimes, achievable expansion rates, density limitations set by interactions, as well as technological and operational requirements. In this study, we compare viable candidates for gravitational wave detection with atom interferometry, contrast the most promising atomic species, identify the relevant technological milestones and investigate potential source concepts towards a future gravitational wave detector in space.