  Using the recently developed time-dependent Landauer-B\"uttiker formalism and
Jefimenko's retarded solutions to the Maxwell equations, we show how to compute
the time-dependent electromagnetic field produced by the charge and current
densities in nanojunctions out of equilibrium. We then apply this formalism to
a benzene ring junction, and show that geometry-dependent quantum interference
effects can be used to control the magnetic field in the vicinity of the
molecule. Then, treating the molecular junction as a quantum emitter, we
demonstrate clear signatures of the local molecular geometry in the non-local
radiated power.
