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Q: Fachverband Quantenoptik und Photonik

Q 45: Ultracold Plasmas, Rydberg Systems and Molecules

Q 45.1: Gruppenbericht

Donnerstag, 9. März 2017, 11:00–11:30, P 104

Coherent excitation of a single trapped Rydberg ion — •Fabian Pokorny¹, Gerard Higgins^{1, 2}, Chi Zhang¹, Quentin Bodart¹, and Markus Hennrich¹ — ¹Department of Physics, Stockholm University, 10691 Stockholm, Sweden — ²Institut für Experimentalphysik, Universität Innsbruck, 6020 Innsbruck, Austria

Trapped Rydberg ions are a novel approach for quantum information processing [1]. By combining the high degree of control of trapped ion systems with the long-range dipolar interactions of Rydberg ions [2], fast entanglement gates may be realised in large ion crystals [3].

Quantum information processing in such a system links qubit rotations in the ions’ ground states with entanglement operations via the Rydberg interaction. This combination of quantum operations requires that the Rydberg excitation can be controlled coherently.

In the experiments presented here a strontium ion confined in a linear Paul trap was excited to the Rydberg state via a two-photon excitation with 243nm and 307nm light [4]. We observed EIT in this system and mapped the population to the Rydberg state and back via STIRAP. This is the first observed coherently manipulated Rydberg excitation of an ion.

[1] M. Müller, et al., New J. Phys. 10, 093009 (2008)

[2] D. Jaksch, et al., Phys. Rev. Lett. 85, 2208 (2000)

[3] F. Schmidt-Kaler, et al, New J. Phys. 13, 075014, (2011)

[4] G. Higgins, et al, arXiv:1611.02184v1, (2016)