Phys. Rev. Lett. 92, 167902 (2004) [4 pages]Concurrence of Mixed Bipartite Quantum States in Arbitrary DimensionsReceived 4 November 2003; published 23 April 2004 We derive a lower bound for the concurrence of mixed bipartite quantum states, valid in arbitrary dimensions. As a corollary, a weaker, purely algebraic estimate is found, which detects mixed entangled states with a positive partial transpose. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.167902
DOI:
10.1103/PhysRevLett.92.167902
PACS:
03.67.Mn, 89.70.+c
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