Optimal, reliable estimation of quantum states

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Optimal, reliable estimation of quantum states

Accurately inferring the state of a quantum device from the results of measurements is a crucial task in building quantum information processing hardware. The predominant state estimation procedure, maximum likelihood estimation (MLE), generally reports an estimate with zero eigenvalues. These cannot be justified. Furthermore, the MLE estimate is incompatible with error bars, so conclusions dra...

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ژورنال

عنوان ژورنال: New Journal of Physics

سال: 2010

ISSN: 1367-2630

DOI: 10.1088/1367-2630/12/4/043034