67 citations · 297 across the 18 of their papers we have counts for
4 papers · 2 filters
A class of positive atomic maps
Dariusz Chruscinski, Andrzej Kossakowski
We construct a new class of positive indecomposable maps in the algebra of `d x d' complex matrices. These maps are characterized by the `weakest' positivity property and for this…
Quantum states with strong positive partial transpose
Dariusz Chruscinski, Jacek Jurkowski, Andrzej Kossakowski
We construct a large class of bipartite M x N quantum states which defines a proper subset of states with positive partial transposes (PPT). Any state from this class is PPT but th…
Multipartite circulant states with positive partial transposes
Dariusz Chruscinski, Andrzej Kossakowski
We construct a large class of multipartite qudit states which are positive under the family of partial transpositions. The construction is based on certain direct sum decomposition…
On circulant states with positive partial transpose
Dariusz Chruscinski, Andrzej Kossakowski
We construct a large class of quantum "d x d" states which are positive under partial transposition (so called PPT states). The construction is based on certain direct sum decompos…