Teleportation and Dense Coding with Genuine Multipartite Entanglement

Details Teleportation and Dense Coding with Genuine Multipartite Entanglement Teleportation and Dense Coding with Genuine Multipartite Entanglement

2005-10-04

arxiv.org/abs/quant-ph/0510029v1

Physics

Quantum Physics

9 pages, 0 figure

Scientific paper

We present an explicit protocol ${\cal E}_0$ for faithfully teleporting an arbitrary two-qubit state via a genunie four-qubit entangled state. By construction, our four-partite state is not reducible to a pair of Bell states. Its properties are compared and contrasted with those of the four-party GHZ and W states. We also give a dense coding scheme ${\cal D}_0$ involving our state as a shared resource of entanglement. Both ${\cal D}_0$ and ${\cal E}_0$ indicate that our four-qubit state is a likely candidate for the genunine four-partite analogue to a Bell state.

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