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Entanglement transfer from photon-subtracted and photon-added two-mode squeezed fields to a pair of qubits. (English) Zbl 1227.81069

Summary: We investigate the entanglement transfer from a bipartite non-Gaussian continuous-variable (CV) system to a pair of localized qubits. The non-Gaussian state is obtained by the de-Gaussification process involving subtracting photons from or adding photons to a Gaussian field. It is shown that such de-Gaussification process can improve the entanglement transfer.

MSC:

81P40 Quantum coherence, entanglement, quantum correlations
81V80 Quantum optics
81R30 Coherent states
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