  Electron transport through molecular bridge shows novel quantum features.
Propogation of electronic wave function through molecular bridge is completely
different than individual atomic bridge employed between two contacts. In case
of molecular bridge electronic wave propagators interfere and effect conduction
through molecular bonding and anti-bonding states.In the present work i showed
through simple calculation that interference of electronic wave propagators
cause asymmetric propagation of electronic wave through bonding and
anti-bonding state. While for hydrogenic molecule these propagators interfere
completely destructively for bonding state and constructively for anti-bonding
state, giving rise to only one peak in spectral function for anti- bonding
state.
