  We report evidence of large, nonlocal correlations between two spatially
separated normal metals in superconductor/normal-metal (SN) heterostructures,
which manifest themselves a nonlocal voltage generated in response to a driving
current. Unlike prior experiments in SN heterostructures, the nonlocal
correlations are mediated not by a superconductor, but by a proximity-coupled
normal metal. The nonlocal correlations extend over relatively long length
scales in comparison to the superconduncting case. At very low temperatures, we
find a reduction in the nonlocal voltage for small applied currents that cannot
be explained by the quasiclassical theory of superconductivity. We believe is a
signature of new long-range quantum correlations in the system.
