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arXiv · 0706.3701

Continuous variable quantum teleportation with non-Gaussian resources

F. Dell'Anno·S. De Siena·L. Albano Farias·F. Illuminati
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Abstract

We investigate continuous variable quantum teleportation using non-Gaussian states of the radiation field as entangled resources. We compare the performance of different classes of degaussified resources, including two-mode photon-added and two-mode photon-subtracted squeezed states. We then introduce a class of two-mode squeezed Bell-like states with one-parameter dependence for optimization. These states interpolate between and include as subcases different classes of degaussified resources. We show that optimized squeezed Bell-like resources yield a remarkable improvement in the fidelity of teleportation both for coherent and nonclassical input states. The investigation reveals that the optimal non-Gaussian resources for continuous variable teleportation are those that most closely realize the simultaneous maximization of the content of entanglement, the degree of affinity with the two-mode squeezed vacuum and the, suitably measured, amount of non-Gaussianity.

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F. Dell'Anno, S. De Siena, L. Albano Farias, F. Illuminati. 2007-06-25. Continuous variable quantum teleportation with non-Gaussian resources. https://doi.org/10.1103/physreva.76.022301

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