  We address an unexpectedly large rectification using a simple quantum wire
with correlated site potentials. The external electric field, associated with
voltage bias, leads to unequal charge currents for two different polarities of
external bias and this effect is further enhanced by incorporating the
asymmetry in wire-to-electrode coupling. Our calculations suggest that in some
cases almost cent percent rectification is obtained for a wide bias window.
This performance is valid against disorder configurations and thus we can
expect an experimental verification of our theoretical analysis in near future.
