Eigenvalue and entropy statistics for products of conjugate random quantum channels

Eigenvalue and entropy statistics for products of conjugate random quantum channels

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Title: Eigenvalue and entropy statistics for products of conjugate random quantum channels
Author: Nechita, Ion; Collins, Benoît
Abstract: Using the graphical calculus and integration techniques introduced by the authors, we study the statistical properties of outputs of products of random quantum channels for entangled inputs. In particular, we revisit and generalize models of relevance for the recent counterexamples to the minimum output entropy additivity problems. Our main result is a classification of regimes for which the von Neumann entropy is lower on average than the elementary bounds that can be obtained with linear algebra techniques.
Date: 2010
URI: http://hdl.handle.net/10393/19588

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