Multipartite entanglement for continuous variables: A quantum teleportation network

Details Multipartite entanglement for continuous variables: A quantum teleportation network Multipartite entanglement for continuous variables: A quantum teleportation network

1999-06-06

arxiv.org/abs/quant-ph/9906021v2

Phys. Rev. Lett. 84, 3482 (2000)

Physics

Quantum Physics

4 pages, 2 figures, published version, paper shorter, title longer

Scientific paper

10.1103/PhysRevLett.84.3482

We show that {\it one} single-mode squeezed state distributed among $N$ parties using linear optics suffices to produce a truly $N$-partite entangled state for any nonzero squeezing and arbitrarily many parties. From this $N$-partite entangled state, via quadrature measurements of $N-2$ modes, bipartite entanglement between any two of the $N$ parties can be `distilled', which enables quantum teleportation with an experimentally determinable fidelity better than could be achieved in any classical scheme.

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