Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 74: Quantum Information: Quantum Communication III
Q 74.2: Talk
Friday, March 27, 2015, 14:45–15:00, K/HS1
Hybrid system of a semiconductor quantum dot and a single ion — •Hendrik-Marten Meyer1, Rob Stockill2, Matthias Steiner2,4, Claire Le Gall2, Clemens Matthiesen2, Jakob Reichel3, Mete Atatüre2, and Michael Köhl1 — 1Physikalisches Institut, Universität Bonn, Wegelerstraße 8, D-53115 Bonn, Germany — 2Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, United Kingdom — 3Laboratoire Kastler-Brossel, ENS/UPMC-Paris 6/CNRS, F-75005 Paris, France — 4Present Address: Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore
Coupling of individual quantum systems is a fundamental requirement for building scaleable quantum networks. Interfacing dissimilar quantum systems makes it possible to increase the variety of the individual network constituents and thus offers a strengthening of the system in total. Here we present the first direct photonic coupling between a semiconductor quantum dot and a single trapped atomic ion. We channel single photons generated by the quantum dot via a 50 meter long optical fiber towards the ion, which is trapped inside a high-finesse fiber cavity. We compensate the effect of the sixty-fold mismatch in the radiative linewidths between the quantum dot and the ion with coherent photon generation. In a first step towards quantum state-transfer in such a hybrid network, we present classical correlation between the σz-projection of the quantum dot spin and the internal state of the ion.