Freiburg 2019 – wissenschaftliches Programm
FM 40.4: Poster
Dienstag, 24. September 2019, 16:30–18:30, Tents
Rydberg atoms in strong electric fields and in superconducting microwave cavities — •Andreas Günther1, Conny Glaser1, Manuel Kaiser1, Lorinc Sárkány1, Dieter Kölle1, Reinhold Kleiner1, David Petrosyan2, and József Fortágh1 — 1Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany — 2Institute of Electronic Structure and Laser, FORTH, GR-71110 Heraklion, Crete, Greece
Using a novel quantum gas microscope, we directly measure the excitation blockade for strongly Stark-shifted Rydberg states close to the classical ionization limit. Therefore, we developed a novel scheme for tuning the interactions and controlling the ionization rate, using an avoided crossing in the corresponding Stark map. We investigate the dipole blockade by analyzing the spatial correlations of the excited Rydberg atoms for different values of the initial dipole moment and compare our findings to theoretical simulations.
Interparticle interactions, such as the dipole-dipole blockade, are of specific importance for Rydberg based quantum gates. In view of such a scheme, we study the coupling of Rydberg atoms to a superconducting coplanar microwave cavity. Depending on the microwave power, we observe Rabi oscillations at different frequencies, which allow for coherent state manipulations and may lead to coupling of Rydberg state pairs via the cavity field.