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Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 24: Quantum Effects: Entanglement and Decoherence III

Q 24.5: Vortrag

Dienstag, 24. März 2015, 15:30–15:45, B/gHS

Graph State Repeater — •Michael Epping, Hermann Kampermann, and Dagmar Bruß — Institut für Theoretische Physik III, Heinrich-Heine-Universität Düsseldorf, Deutschland

We describe a one way quantum repeater scheme using encoding in the language of graph states. This shows how to generalize the scheme to networks, in which graph states shared by several parties can be created. For a general CSS code we do an error analysis that allows to correct qubit errors and erasures caused by imperfect preparation, gates, transmission, detection, etc.. We analyze the cost and repeater rate for this general scheme. The concept is exemplified by the 7-qubit Steane code and the quantum Golay code.

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