Activating bound entanglement in multi-particle systems

Details Activating bound entanglement in multi-particle systems Activating bound entanglement in multi-particle systems

2000-02-09

arxiv.org/abs/quant-ph/0002028v1

Phys. Rev. A 62, 022302 (2000)

Physics

Quantum Physics

8 pages, 3 figures

Scientific paper

10.1103/PhysRevA.62.022302

We analyze the existence of activable bound entangled states in multi-particle systems. We first give a series of examples which illustrate some different ways in which bound entangled states can be activated by letting some of the parties to share maximally entangled states. Then, we derive necessary conditions for a state to be distillable as well as to be activable. These conditions turn out to be also sufficient for a certain family of multi-qubit states. We use these results to explicitely to construct states displaying novel properties related to bound entanglement and its activation.

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