Physics – Quantum Physics
Scientific paper
2006-06-26
Open Sys. Information Dyn. 14 (2007) 275-294
Physics
Quantum Physics
18 pages
Scientific paper
We construct a new class of positive indecomposable maps in the algebra of 'd
x d' complex matrices. Each map is uniquely characterized by a cyclic
bistochastic matrix. This class generalizes a Choi map for d=3. It provides a
new reach family of indecomposable entanglement witnesses which define
important tool for investigating quantum entanglement.
Chruscinski Dariusz
Kossakowski Andrzej
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