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Q: Fachverband Quantenoptik und Photonik

Q 14: Quanteninformation (Quantencomputer I)

Q 14.5: Talk

Tuesday, March 11, 2008, 15:15–15:30, 1B

Pseudo bound entanglement in NMR quantum computing — •Hermann Kampermann¹, Xinhua Peng², Dagmar Bruß¹, and Dieter Suter² — ¹Theoretische Physik III, Universität Düsseldorf — ²Experimentelle Physik IIIa, Universität Dortmund

In NMR we have precise coherent control of small qubit systems (up to roughly 12 qubits), but NMR systems used today consist of large ensembles of nuclear spin quantum processors in a higly mixed (separable) state. So-called pseudo pure states are used to circumvent this problem. We use liquid state Nuclear Magnetic Resonance (NMR) to generate a 3-qubit "pseudo bound entangled state" and characterize it via state tomography and by detection of a witness operator for this class of states.