Minimal optimal generalized quantum measurements

Details Minimal optimal generalized quantum measurements Minimal optimal generalized quantum measurements

1998-03-25

arxiv.org/abs/quant-ph/9803066v1

Phys.Rev.Lett. 81 (1998) 1351-1354

Physics

Quantum Physics

9 pages, Latex

Scientific paper

10.1103/PhysRevLett.81.1351

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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