Entangled coherent states: teleportation and decoherence

Abstract

When a superposition $(|\alpha >-|-\alpha >)$ 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 $\alpha$, 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

11 pages LaTeX, 3 eps figures. Submitted to Phys. Rev. A

References in corpus (1)

• Experimental quantum teleportation

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