Witnessing multipartite entanglement

Details Witnessing multipartite entanglement Witnessing multipartite entanglement

2003-09-03

arxiv.org/abs/quant-ph/0309043v2

Phys. Rev. Lett. 92, 087902 (2004)

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.92.087902

We present the experimental detection of genuine multipartite entanglement using entanglement witness operators. To this aim we introduce a canonical way of constructing and decomposing witness operators so that they can be directly implemented with present technology. We apply this method to three- and four-qubit entangled states of polarized photons, giving experimental evidence that the considered states contain true multipartite entanglement.

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