Data di Pubblicazione:
2017
Citazione:
An effective iterative method to build the Naimark extension of rank-n POVMs / N.D. Pozza, M.G.A. Paris. - In: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION. - ISSN 0219-7499. - 15:4(2017), pp. 1750029.1-1750029.15. [10.1142/S0219749917500290]
Abstract:
We revisit the problem of finding the Naimark extension of a probability operator-valued measure (POVM), i.e. its implementation as a projective measurement in a larger Hilbert space. In particular, we suggest an iterative method to build the projective measurement from the sole requirements of orthogonality and positivity. Our method improves existing ones, as it may be employed also to extend POVMs containing elements with rank larger than one. It is also more effective in terms of computational steps.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Naimark extension; Naimark theorem; POVM
Elenco autori:
N.D. Pozza, M.G.A. Paris
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