Xiaozhu Kang, Hui Zhang, et al.
ICWS 2008
We explore the relation between the rank of a bipartite density matrix and the existence of bound entanglement. We show a relation between the rank, marginal ranks, and distillability of a mixed state and use this to prove that any rank n bound entangled state must have support on no more than an n × n Hilbert space. A direct consequence of this result is that there are no bipartite bound entangled states of rank two. We also show that a separability condition in terms of a quantum entropy inequality is associated with the above results. We explore the idea of how many pure states are needed in a mixture to cancel the distillable entanglement of a Schmidt rank n pure state and provide a lower bound of n - 1. We also prove that a mixture of a non-zero amount of any pure entangled state with a pure product state is distillable. © 2002 Published by Elsevier Science B.V.
Xiaozhu Kang, Hui Zhang, et al.
ICWS 2008
N.K. Ratha, A.K. Jain, et al.
Workshop CAMP 2000
Liqun Chen, Matthias Enzmann, et al.
FC 2005
Robert G. Farrell, Catalina M. Danis, et al.
RecSys 2012