Multipartite entanglement

First, we show how the quantum circuits for generating and me asuring multi-party entanglement of qubits can be translated to continuous quan tum variables. We derive sufficient inseparability criteria for N -party continuous-variable states and discuss their applicability. Then, we consider a family of m ultipartite entangled states (multi-party multi-mode states with one mode per par ty) described by continuous quantum variables and analyze their properties . These states can be efficiently generated using squeezed light and linear optic s.

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