Has liquid metallic hydrogen on Jupiter been recreated in the lab?

Few claims about metallic states of superdense hydrogen go unchallenged, and the latest is no exception. Two researchers at Harvard University in the US today report the observation of an electrically conducting liquid in the element compressed in the laboratory to extremely high pressures. They say their liquid metallic hydrogen might be like the stuff in the interiors of gas-giant planets such as Jupiter and Saturn, and fits with recent observations of Jupiter's magnetic field. But other experts question these interpretations.