We investigated the role of non-Gaussianity (nG) plays in the enhancement ofthe fidelity in continuous-variable quantum teleportation of ideal Braunsteinand Kimble (BK) protocol for coherent states, theoretically. Thede-Gaussification procedure is realized through subtracting photons on thetwo-mode squeezed vacuum state (TMSVs). We find that the high fidelity alwaysrefers to a symmetrical arrangement of photon subtractions on the differentmodes of the TMSVs. The non-Gaussian resources demonstrate commendablesuperiorities compare with the Gaussian resources only for symmetricalarrangements of photon subtractions, however, the asymmetrical arrangements donot. When the total number of photon subtractions be a constant, we find thatthe optimal nG procedure prefers the most asymmetrical arrangement ofsubtractions. This characteristic is not consistent with the result that thehighest fidelity refers to a symmetrical case. Under the same squeezingparameter, a higher nG might not always lead to a higher fidelity.
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