Multipartite entanglement
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First, we show how the quantum circuits for generating and measuring multi-party entanglement of qubits can be translated to continuous quantum variables. We derive sufficient inseparability criteria for $N$-party continuous-variable states and discuss their applicability. Then, we consider a family of multipartite entangled states (multi-party multi-mode states with one mode per party) described by continuous quantum variables and analyze their properties. These states can be efficiently generated using squeezed light and linear optics.
to appear in the book ``Quantum Information Theory with Continuous Variables'', edited by A.K.Pati and Samuel L.Braunstein
to appear in the book ``Quantum Information Theory with Continuous Variables'', edited by A.K.Pati and Samuel L.Braunstein