Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 42: Ultracold Plasmas and Rydberg Systems III (with Q)

A 42.7: Vortrag

Freitag, 27. März 2015, 12:30–12:45, P/H2

Taking trapped strontium ions to a higher level — •Gerard Higgins1, Fabian Pokorny1, Christine Maier2, Johannes Haag1, Florian Kress1, Yves Colombe1, and Markus Hennrich11Institut für Experimentalphysik, Universität Innsbruck, Austria — 2Institut für Quantenoptik und Quanteninformation, Innsbruck, Austria

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

We are working towards exciting strontium ions, trapped in a linear Paul trap, to Rydberg states 26<n<60 using a two-photon excitation scheme with 243nm and 304-309nm laser light.

We report on excitation using the UV lasers into higher levels, such as the intermediate state (6P1/2) with 243nm laser light. We also present the overlapping of both Rydberg-excitation laser beams using a hydrogen-loaded photonic crystal fiber [4] and the focussing of both beams down to ∼ 10 µ m onto trapped ions.

[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] Y. Colombe, et al., Opt. Express, 22, 19783 (2014)

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