Experimental Preparation of Quadripartite Cluster and GHZ Entangled States for Continuous Variables

Details Experimental Preparation of Quadripartite Cluster and GHZ Entangled States for Continuous Variables Experimental Preparation of Quadripartite Cluster and GHZ Entangled States for Continuous Variables

2006-08-24

arxiv.org/abs/quant-ph/0608187v1

Phys. Rev. Lett. 98, 070502(2007)

Physics

Quantum Physics

Scientific paper

The cluster states and Greenberger-Horne-Zeilinger (GHZ) states are two different types of multipartite quantum entangled states. We present the first experimental results generating continuous variable quadripartite cluster and GHZ entangled states of electromagnetic fields. Utilizing four two-mode squeezed states of light and linearly optical transformations, the two types of entangled states for amplitude and phase quadratures of light are experimentally produced. The combinations of the measured quadrature variances prove the full inseparability of the generated four subsystems. The presented experimental schemes show that the multipartite entanglement of continuous variables can be deterministically generated with the relatively simple implementation.

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