10.18453/rosdok_id00003717 Block, Johannes Johannes Block http://d-nb.info/gnd/1260691993 Universität Rostock 2021 530 Physics 2021 en http://purl.uni-rostock.de/rosdok/id00003717 urn:nbn:de:gbv:28-rosdok_id00003717-6 Rydberg atoms are highly excited atoms with intriguing properties. In the framework of quantum electrodynamics, the internal dynamics of a Rydberg atom in front of a surface are investigated in fourth order perturbation theory. For a pair of Rb Rydberg atoms in front of a perfectly conducting surface, a bound state with micrometer bond length, a Rydberg macrodimer, is predicted for a small window of surface distance. This leads to the possibility to use surface properties to actively tune interactions.