Journal of East China Normal University(Natural Sc ›› 2014, Vol. 2014 ›› Issue (1): 1-8.

• Article •     Next Articles

Decompositions for a class of 5×5 separable quantum states

HUANG Xiao-fen   

  1. School of Mathematics and Statistics, Hainan Normal University,\; Haikou Hainan\; 571158, China
  • Received:2013-04-01 Revised:2013-07-01 Online:2014-01-25 Published:2015-09-25

Abstract: This paper studied certain quantum states for which the PPT
criterion was both sufficient and necessary for separability. A
class of 5×5, bipartite mixed states was prestented and the
conditions of PPT for these states were derived. The separable pure
state decompositions of these states were explicitly constructed
when they were PPT, so we can judge a class of states entangled or
not by this method.

Key words: PPT, entanglement, separability

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