  We consider theoretically the possibility of an electron acceleration in
quantum wire by short magnetic pulses lasted bewteen several to few tens of
picoseconds. We show that such possibility exists provided that, the electron
is initially localized in part of nanowire that consists of two vertically
aligned layers which are tunnel coupled. When a horizontally directed magnetic
field, changeable in time, is also perpendicular to the main axis of a wire, it
generates a rotational electric field in it which pushes the upper and the
lower parts of the electron wavepacket in opposite directions. We have found
however, that for an asymmetric vertical confinement, the majority part of
charge density starts to move in the direction of local electric field in its
layer but it also drags the minority part in the same direction what results in
coherent motion of an entire wavepacket. We discuss the dynamics of this motion
in dependence on the time characteristics of the magnetic pulse.
