Robustness of Entanglement for Bell Decomposable States

Details Robustness of Entanglement for Bell Decomposable States Robustness of Entanglement for Bell Decomposable States

2002-08-03

arxiv.org/abs/quant-ph/0208019v1

Physics

Quantum Physics

11 pages, Latex

Scientific paper

10.1140/epjd/e2003-00243-1

We propose a simple geometrical approach for finding the robustness of entanglement for Bell decomposable states of 2 otimes 2 quantum systems. It is shown that the robustness of entanglement is equal to the concurrence. We also present an analytical expression for two separable states that wipe out all entanglement of these states. Finally the random robustness of these states is also obtained.

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