Stuttgart 2012 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 8: Quanteninformation: Konzepte und Methoden 2
Q 8.4: Talk
Monday, March 12, 2012, 14:45–15:00, V38.04
Statistical tests for quantum state reconstruction II: Experiment — •Philipp Schindler1, Thomas Monz1, Matthias Kleinmann2, Tobias Moroder3, Otfried Gühne2, and Rainer Blatt1,3 — 1Institut für Experimentalphysik, Universität Innsbruck — 2Naturwissenschaftlich-Technische Fakultät, Universität Siegen — 3Institut für Quantenoptik und Quanteninformation, Innsbruck
Quantum state tomography is nowadays routinely used in many experiments, for instance to characterize entangled quantum states or to determine input and output states of a quantum processor. Tomography reconstruction algorithms are designed to restrict the results onto physical states. These methods will always return a valid quantum state for any data and therefore it seems necessary to test the recorded data prior to reconstructing the quantum state. We directly apply statistical tests on our experimental data taken in an ion trap quantum computer. In particular, we analyze the sensitivity of these tests to various experimental imperfections like crosstalk and rotated bases.