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Quantum versus Classical Domains for Teleportation with Continuous Variables
Samuel L. Braunstein, Christopher A. Fuchs, H. J. Kimble +1
Fidelity F{classical} = 1/2 has been established as setting the boundary between classical and quantum domains in the teleportation of coherent states of the electromagnetic field…
Optimal cloning of coherent states with a linear amplifier and beam splitters
Samuel L. Braunstein, Nicolas J. Cerf, Sofyan Iblisdir +2
A transformation achieving the optimal symmetric N-to-M cloning of coherent states is presented. Its implementation only requires a phase-insensitive linear amplifier and a network…
Greenberger-Horne-Zeilinger nonlocality in phase space
P. van Loock, Samuel L. Braunstein
We show that the continuous-variable analogues to the multipartite entangled Greenberger-Horne-Zeilinger states of qubits violate Bell-type inequalities imposed by local realistic…