Details

Autor(en) / Beteiligte

• Liebisch, Tara Cubel
• Schlagmüller, Michael
• Engel, Felix
• Nguyen, Huan
• Balewski, Jonathan
• Lochead, Graham
• Böttcher, Fabian
• Westphal, Karl M
• Kleinbach, Kathrin S
• Schmid, Thomas
• Gaj, Anita
• Löw, Robert
• Hofferberth, Sebastian
• Pfau, Tilman
• Pérez-Ríos, Jesús
• Greene, Chris H

Titel

Controlling Rydberg atom excitations in dense background gases

Ist Teil von

• Journal of physics. B, Atomic, molecular, and optical physics, 2016-09, Vol.49 (18), p.182001-182014

Ort / Verlag

IOP Publishing

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We discuss the density shift and broadening of Rydberg spectra measured in cold, dense atom clouds in the context of Rydberg atom spectroscopy done at room temperature, dating back to the experiments of Amaldi and Segrè in 1934. We discuss the theory first developed in 1934 by Fermi to model the mean-field density shift and subsequent developments of the theoretical understanding since then. In particular, we present a model whereby the density shift is calculated using a microscopic model in which the configurations of the perturber atoms within the Rydberg orbit are considered. We present spectroscopic measurements of a Rydberg atom, taken in a Bose-Einstein condensate and thermal clouds with densities varying from 5 × 1014 to 9 × 1012 cm−3. The density shift measured via the spectrum's center of gravity is compared with the mean-field energy shift expected for the effective atom cloud density determined via a time of flight image. Lastly, we present calculations and data demonstrating the ability of localizing the Rydberg excitation via the density shift within a particular density shell for high principal quantum numbers.