Broadcasting of entanglement in three-particle GHZ state via quantum copying

Details Broadcasting of entanglement in three-particle GHZ state via quantum copying Broadcasting of entanglement in three-particle GHZ state via quantum copying

2000-05-17

arxiv.org/abs/quant-ph/0005070v1

Physics

Quantum Physics

9 pages, to appear in Chin. Phys. Lett. (2000)

Scientific paper

We introduce entanglement measures to describe entanglement in a three-particle system and apply it to studying broadcasting of entanglement in three-particle GHZ state. We show that entanglement of three-qubit GHZ state can be partially broadcasted with the help of local or non-local copying processes. It is found that non-local cloning is much more efficient than local cloning for the broadcasting of entanglement.

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