Realization of a gravity-resonance-spectroscopy technique
Realization of a gravity-resonance-spectroscopy technique
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DOI：
10.1038/nphys1970
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发表时间：
2011-06-01
期刊：
影响因子：
19.6
通讯作者：
Abele, Hartmut
中科院分区：
文献类型：
--
作者：
Jenke, Tobias;Geltenbort, Peter;Abele, Hartmut
光谱学是一种通常用于通过频率测量来评估未知能量的方法。在许多问题中，谐振技术（1，2）可以实现高精度测量，但可观测量通常仅限于电磁相互作用。在这里，我们报告的应用共振光谱重力。与以前的共振方法相比，量子力学跃迁是由振荡场驱动的，该振荡场不直接将电磁电荷或电磁矩耦合到电磁场。相反，当超冷中子的波包耦合到作为驱动力的硬表面的调制时，我们观察到引力量子态之间的跃迁。这些实验有可能在微米尺度上检验等效原理（3）和牛顿引力定律（4，5）。
Spectroscopy is a method typically used to assess an unknown quantity of energy by means of a frequency measurement. In many problems, resonance techniques(1,2) enable high-precision measurements, but the observables have generally been restricted to electromagnetic interactions. Here we report the application of resonance spectroscopy to gravity. In contrast to previous resonance methods, the quantum mechanical transition is driven by an oscillating field that does not directly couple an electromagnetic charge or moment to an electromagnetic field. Instead, we observe transitions between gravitational quantum states when the wave packet of an ultra-cold neutron couples to the modulation of a hard surface as the driving force. The experiments have the potential to test the equivalence principle(3) and Newton's gravity law at the micrometre scale(4,5).