现代物理学中的一个著名理论有可能引起电子器件的重大变革,其影响之深远可与四十年前开始用晶体管代替真空管的那场重大变革相提并论。人类最辉煌的一项智力成就已开始获得了实际应用。小得可以放在手掌上的一种新型激光器其功率不亚于大如办公桌的传统激光器的功率。在这台小小的激光器中有一个“量子阱”,这是一种小得无法想象的电子势阱,它把电子束缚在一起,并使电子以普通激光器所无法达到的高效率发出激光,作为一种人工做成的结构,量子阱小得不能再小——百万个量子阱合起来也只有印刷符号中的一个小黑点那样大,然而它却是使量子力学能获得新的、 A well-known theory in modern physics has the potential to cause major changes in electronics that far outweigh the dramatic change that began with transistors in place of tubes forty years ago. One of the most brilliant intellectual achievements of mankind has begun to gain practical application. A new laser that is so small that it can be placed on the palm of your hand has no less than the power of a traditional laser such as a desk. In this little laser there is a “quantum trap,” a tiny, unimaginable electron trap that binds electrons together and emits electrons with high efficiency that conventional lasers can not, As a hand-made structure, the quantum wells are so small that a million quantum wells, in combination, are as large as a small black dot in a printed symbol, yet nevertheless enable new quantum mechanics,