1999/10/06 by W. Dür, J. I. Cirac, M. Lewenstein +1 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physreva.61.062313
published as Phys. Rev. A 61, 062313 (2000) · 8 pages, 1 figure
arxiv created 1999/10/06 · arxiv updated 2009/12/01
We study the distillability of a certain class of bipartite density operators which can be obtained via depolarization starting from an arbitrary one. Our results suggest that non-positivity of the partial transpose of a density operator is not a sufficient condition for distillability, when the dimension of both subsystems is higher than two.