Marmo, Giuseppe and Simoni, Alberto and Ventriglia, Franco (2008) Semigroup of positive maps for qu-dit states and entanglement in tomographic probability representation. [Pubblicazione in rivista scientifica]

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Item Type: Pubblicazione in rivista scientifica
Uncontrolled Keywords: Tomograms, Quantum tomograms, semigroups, positive maps, entanglement
Date Deposited: 21 Oct 2010 06:16
Last Modified: 30 Apr 2014 19:42
URI: http://www.fedoa.unina.it/id/eprint/7186

Abstract

Stochastic and bistochastic matrices providing positive maps for spin states (for qudits) are shown to form semigroups with dense intersection with the Lie groups $IGL(n, \mathbb{R})$ and $GL(n, \mathbb{R})$ respectively. The density matrix of a qudit sta

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