简要介绍了量子相干和干涉效应的研究动态和·项最新理论研究进展.没计了一个存在Fano类型隧穿感应量子干涉的GaAs/AlxGa1-xAs非对称量子阱结构.在该量子阱中,可通过一束控制光抑制量子干涉,进而调制信号光的传播特性.这一现象可用来实现一个宽带超快仝光开关.
Quantum coherence and interference are introduced briefly, as well as recent theoretical progress. A GaAs/AlxGa1-xAs asymmetric double quantum well structure with Fano-type tunneling induced quantum interference is proposed, wherein a control light beam can be used to suppress quantum interference and modify the propagation of an optical signal. This phenomenon can be used to realize a broadband ultra-fast optical switch.