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Minimal optimal generalized quantum measurements

J. I. Latorre·P. Pascual·R. Tarrach
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Abstract

Optimal and finite positive operator valued measurements on a finite number $N$ of identically prepared systems have been presented recently. With physical realization in mind we propose here optimal and minimal generalized quantum measurements for two-level systems. We explicitly construct them up to N=7 and verify that they are minimal up to N=5. We finally propose an expression which gives the size of the minimal optimal measurements for arbitrary $N$.

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J. I. Latorre, P. Pascual, R. Tarrach. 1998-03-25. Minimal optimal generalized quantum measurements. https://doi.org/10.1103/physrevlett.81.1351

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