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math-ph2010★ 8 cited
Normal completely positive maps on the space of quantum operations
G. Chiribella, A. Toigo, V. Umanità
Quantum supermaps are higher-order maps transforming quantum operations into quantum operations. Here we extend the theory of quantum supermaps, originally formulated in the finite…
math-ph2008★ 13 cited
Barycentric decomposition of quantum measurements in finite dimensions
G. Chiribella, G. M. D'Ariano, D. M. Schlingemann
We analyze the convex structure of the set of positive operator valued measures (POVMs) representing quantum measurements on a given finite dimensional quantum system, with outcome…