Bound Entanglement and Teleportation

Details Bound Entanglement and Teleportation Bound Entanglement and Teleportation

1998-07-24

arxiv.org/abs/quant-ph/9807069v1

Physics

Quantum Physics

3 pages, RevTeX

Scientific paper

10.1103/PhysRevA.59.137

Recently M. Horodecki, P. Horodecki and R. Horodecki have introduced a set of density matrices of two spin-1 particles from which it is not possible to distill any maximally entangled states, even though the density matrices are entangled. Thus these density matrices do not allow reliable teleportation. However it might nevertheless be the case that these states can be used for teleportation, not reliably, but still with fidelity greater than that which may be achieved with a classical scheme. We show that, at least for some of these density matrices, teleportation cannot be achieved with better than classical fidelity.

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