Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 17: Ultracold plasmas and Rydberg systems II (with Q)
A 17.4: Vortrag
Dienstag, 1. März 2016, 15:15–15:30, f303
Resolved quadrupole shifts of a single trapped Rydberg ion — •Gerard Higgins1,2, Fabian Pokorny1,2, Weibin Li3, Christine Maier2, Johannes Haag2, Florian Kress2, Quentin Bodart1, Yves Colombe2, Igor Lesanovsky3, and Markus Hennrich1,2 — 1Stockholm University, Sweden — 2Universität Innsbruck, Austria — 3University of Nottingham, United Kingdom
Trapped Rydberg ions are a novel approach to quantum information processing, which joins the advanced quantum control of trapped ions with the strong dipolar interactions between Rydberg atoms [1-2]. The strong electric fields used for trapping Rydberg ions give rise to fundamental phenomena which are not usually observed in neutral Rydberg atom experiments. Here we present recent experimental results in which effects of the trap on a Rydberg ion were observed.
A single strontium ion was trapped in the center of the electric quadrupole field of a linear Paul trap and excited to Rydberg S- and D-states using two ultraviolet photons. The Rydberg ion was subjected to both the DC and the radio-frequency electric quadrupole fields of the trap as well as an applied magnetic field. The Rydberg states were split by the magnetic field due to the Zeeman effect, which explains the observed resonance structure of the excited Rydberg S-states. Rydberg D-states possess an electric quadrupole moment and couple to the gradients of the trapping fields, which has allowed effects of both the DC and RF trapping fields to be resolved in D-state resonances.
[1] M. Müller, et al., New J. Phys. 10, 093009 (2008)
[2] T. Feldker, et al., Phys. Rev. Lett. 115, 173001 (2015)