This paper explores the feasibility of detecting single gravitons using quantum sensing. The authors propose that signatures of single graviton exchange can be observed in laboratory experiments using massive quantum acoustic resonators. Stimulated and spontaneous single-graviton processes are analyzed, focusing on stimulated absorption detectable through continuous sensing of quantum jumps. The research suggests that single graviton signatures are within the reach of current and near-future experiments, potentially providing the first experimental clue to the quantization of gravity.

Germain Tobar, Sreenath K. Manikandan, Thomas Beitel, Igor Pikovski