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Entanglement concentration of continuous variable quantum states

Jaromir Fiurasek·Ladislav Mista, Jr.·Radim Filip
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Abstract

We propose two probabilistic entanglement concentration schemes for a single copy of two-mode squeezed vacuum state. The first scheme is based on the off-resonant interaction of a Rydberg atom with the cavity field while the second setup involves the cross Kerr interaction, auxiliary mode prepared in a strong coherent state and a homodyne detection. We show that the continuous-variable entanglement concentration allows us to improve the fidelity of teleportation of coherent states.

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Jaromir Fiurasek, Ladislav Mista, Jr., Radim Filip. 2002-05-27. Entanglement concentration of continuous variable quantum states. https://doi.org/10.1103/physreva.67.022304

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