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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster I

Q 35.27: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Tools for single-ion quantum state preparation and analysis — •Pascal Eich¹, Jan Huwer^{1, 2}, Christoph Kurz¹, Philipp Müller¹, Michael Schug¹, and Jürgen Eschner¹ — ¹Universität des Saarlandes, Experimentalphysik, Campus E2 6, 66123 Saarbrücken, Germany — ²ICFO – Institut de Ciències Fotòniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain

Reliable preparation and analysis of quantum states is essential for quantum information applications. Here we demonstrate the required tools for the manipulation of electronic states of a single ⁴⁰Ca⁺ ion in the context of quantum repeaters. In the S_1/2 ground state, we prepare one of the two Zeeman sublevels by optical pumping and create a coherent superposition using radio frequency pulses. The population in the S_1/2 Zeeman sublevels is coherently transferred to one of the Zeeman sublevels of the metastable D_5/2 state using a narrowband laser at 729 nm, either via the rapid adiabatic passage technique or by a Rabi pulse.