中国物理B ›› 2009, Vol. 18 ›› Issue (6): 2523-2528.doi: 10.1088/1674-1056/18/6/067
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
王立飞, 杨光参
Wang Li-Fei(王立飞) and Yang Guang-Can(杨光参)
摘要: This paper studies the quantum dynamics of electrons in a surface quantum well in the time domain with autocorrelation of wave packet. The evolution of the wave packet for different manifold eigenstates with finite and infinite lifetimes is investigated analytically. It is found that the quantum coherence and evolution of the surface electronic wave packet can be controlled by the laser central energy and electric field. The results show that the finite lifetime of excited states expedites the dephasing of the coherent electronic wave packet significantly. The correspondence between classical and quantum mechanics is shown explicitly in the system.
中图分类号: (Quantum wells)