Dynamics of electron in a surface quantum well

This paper studies the quantum dynamics of electrons in a surfacequantum well in the time domain with autocorrelation of wave packet.The evolution of the wave packet for different manifold eigenstates withfinite and infinite lifetimes is investigated analytically. It isfound that the quantum coherence and evolution of the surface electronicwave packet can be controlled by the laser central energy andelectric field. The results show that the finite lifetime of excitedstates expedites the dephasing of the coherent electronic wavepacket significantly. The correspondence between classical andquantum mechanics is shown explicitly in the system.