Tobias Moroder, Matthias Kleinmann, Philipp Schindler, Thomas Monz, Otfried Gühne, Rainer Blatt
When systematic errors are ignored in an experiment, the subsequent analysis of its results becomes questionable. We develop tests to identify systematic errors in experiments where only a finite amount of data is recorded and apply these tests to tomographic data taken in an ion-trap experiment. We put particular emphasis on quantum state tomography experiments and present two detection methods; the first relies on ideas similar to entanglement witnesses or Bell inequalities while the second is based on the generalized likelihood ratio test.
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http://arxiv.org/abs/1204.3644
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