We report the experimental demonstration of quantum teleportation of the quadrature amplitudes of a light field. Our experiment was stably locked for long periods, and was analyzed in terms of fidelity, F; and with signal transfer, T_{ q}=T^{ +}+T^{ -}, and noise correlation, V_{ q}=V_{ in|out}^{ +} V_{ in|out}^{ -}. We observed an optimum fidelity of 0.64 +/- 0.02, T_{ q}= 1.06 +/- 0.02 and V_{ q} =0.96 +/- 0.10. We discuss the significance of both T_{ q}>1 and V_{ q}<1 and their relation to the teleportation no-cloning limit.
Categories: quant-ph