Entanglement concentration of continuous variable quantum states

Details Entanglement concentration of continuous variable quantum states Entanglement concentration of continuous variable quantum states

2002-05-27

arxiv.org/abs/quant-ph/0205169v1

Phys. Rev. A 67, 022304 (2003).

Physics

Quantum Physics

7 pages, 7 figures

Scientific paper

10.1103/PhysRevA.67.022304

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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