00 12 08 6 v 1 1 7 D ec 2 00 0 Entangled coherent states : teleportation and decoherence

@inproceedings{Enk20080010,
  title={00 12 08 6 v 1 1 7 D ec 2 00 0 Entangled coherent states : teleportation and decoherence},
  author={Steven J. van Enk and Osamu Hirota},
  year={2008}
}
When a superposition (|α〉−|−α〉) of two coherent states with opposite phase falls upon a 50-50 beamsplitter, the resulting state is entangled. Remarkably, the amount of entanglement is exactly 1 ebit, irrespective of α, as was recently discovered by O. Hirota and M. Sasaki. Here we discuss decoherence properties of such states and give a simple protocol that teleports one qubit encoded in Schrödinger cat states. 
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