论文标题
重力红移和自由跌落的普遍性原子间变量测试
Atom-interferometric test of the universality of gravitational redshift and free fall
论文作者
论文摘要
轻脉冲原子干涉仪构成了惯性力的强大量子传感器。它们基于离域的空间叠加，与内部过渡的结合将它们直接连接到原子钟。由于重力红移的经典测试是基于对重力下不同位置的两个时钟的比较，因此有望探索上述干涉仪是否构成了一般相对性测试的竞争选择。在这里，我们提出了一个特定的几何形状，该几何形状与状态转变一起导致了一种对两种违反自由秋季和重力红移的普遍性的敏感的方案，这是一般相对论的两个前提。所提出的干涉仪不依赖内部状态的叠加，而仅依赖于它们之间的过渡，因此概括了物理原子钟和量子 - 锁定干涉法的概念。在最先进的设施中已经展示的技术似乎是可行的。
Light-pulse atom interferometers constitute powerful quantum sensors for inertial forces. They are based on delocalised spatial superpositions and the combination with internal transitions directly links them to atomic clocks. Since classical tests of the gravitational redshift are based on a comparison of two clocks localised at different positions under gravity, it is promising to explore whether the aforementioned interferometers constitute a competitive alternative for tests of general relativity. Here we present a specific geometry which together with state transitions leads to a scheme that is concurrently sensitive to both violations of the universality of free fall and gravitational redshift, two premises of general relativity. The proposed interferometer does not rely on a superposition of internal states, but merely on transitions between them, and therefore generalises the concept of physical atomic clocks and quantum-clock interferometry. An experimental realisation seems feasible with already demonstrated techniques in state-of-the-art facilities.
