Paper has been published in Nature Physics 7, 468–472 (2011) / doi:10.1038/nphys1970, opens an external URL in a new window

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. 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.

Press release at Vienna University of Technology, opens an external URL in a new window