双模非经典光场辐照下介观约瑟夫森结中超流的动力学行为  

DYNAMIC BEHAVIOR OF SUPERCURRENT IN MESOSCOPIC JOSEPHSON JUNCTION INTERACTING WITH CORRELATED TWO MODE SU(1,1) COHERENT STATES OF QUANTUM ELECTROMAGNETIC FIELD

作　　者：邹健[1] 邵彬[1] 邢修三[1] 

机构地区：[1]北京理工大学应用物理系

出　　处：《物理学报》1997年第11期2233-2240,共8页Acta Physica Sinica

基　　金：国家自然科学基金

摘　　要：研究了直流偏置电压下介观约瑟夫森结在ＳＵ（１，１）双模相干态光场作用下超流的动力学行为、流压台阶和直流分量等特性．研究发现超流能够呈现明显的崩塌与复苏现象，对于经典电磁场和非耦合的双模相干态光场作用下的情况，超流不出现此现象，且其流压台阶结构与后两种情况也不相同．The dynamic behaviors of supercurrent in mesoscopic Josephson junction in the presence of a dc bias voltage V 0 and of correlated two mode SU(1,1) coherent states of quantum electromagnetic field, as well as current voltage steps and Shapiro dc current, are investigated.It is shown that the time evolution of supercurrent exhibits collapse and revival phenomenon, but for non correlated two mode coherent states it does not exhibit such a phenomenon. And the current voltage steps of correlated two mode SU(1,1) coherent states of quantum electromagnetic field are different from that of classical electromagnetic field and that of non correlated two mode coherent states.

关 键 词：相干态 超流 双模 介观约瑟夫森结 光场辐照 

分 类 号：O512[理学—低温物理]