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Abstract: We construct a large class of multipartite qudit states which are positiveunder the family of partial transpositions. The construction is based oncertain direct sum decomposition of the total Hilbert space displayingcharacteristic circular structure and hence generalizes a class of bipartitecirculant states proposed recently by the authors. This class contains manywell known examples of multipartite quantum states from the literature andgives rise to a huge family of completely new states.



Autor: Dariusz Chruscinski, Andrzej Kossakowski

Fuente: https://arxiv.org/







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