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Q: Fachverband Quantenoptik und Photonik

Q 24: Quanteninformation: Repeater und Speicher

Q 24.2: Vortrag

Dienstag, 13. März 2012, 11:00–11:15, V7.02

Measurement-based quantum repeaters — •Michael Zwerger¹, Wolfgang Dür¹, and Hans Briegel^1,2 — ¹Institut für theoretische Physik, Universität Innsbruck, Österreich — ²Institut für Quantenoptik und Quanteninformation der österreichischen Akademie der Wissenschaften, Innsbruck, Österreich

We present a measurement-based implementation of the quantum repeater. We envision special purpose processors at each repeater node, which integrate entanglement swapping and purification into a single step. This measurement-based integration leads to significantly improved noise thresholds. It is shown that one or two purification steps per repeater level are sufficient and that with seven levels in total one can reach the international scale.