多模非经典电磁场作用下的介观约瑟夫森结(英文)  

Mesoscopic Josephson junctions in the presence of non-classical multimode electromagnetic field

作　　者：张莉莉[1] 邵彬[2] 邹健[2] 

机构地区：[1]荆门职业技术学院电子信息学院,湖北荆门448000 [2]北京理工大学理学院,北京100081

出　　处：《纺织高校基础科学学报》2007年第1期75-79,共5页Basic Sciences Journal of Textile Universities

摘　　要：研究了多模非经典电磁场作用下介观约瑟夫森结中超导电流的行为.给出了这个量子系统在多模压缩态下的一些基本理论结果,并给出了超导电流在三模压缩真空态下量子坍塌和复苏的性质.结果表明,在多模磁场下超导电流随时间演化展现出了比在单模和双模电磁场下更为复杂的现象.Supercurrent behavior of the mesoscopic Josephson junction coupled to the multimode electromagnetic field is investigated. The basic theoretic sketch of the fully quantum mechanical system for the multimode squeezed state is build. It is shown that the time evolution of the supercurrent in the multimode field can exhibit more complex behavior than in a single-mode field case. The quantum collapse and revival properties of the supercurrent for a three-mode squeezed vacuum state are shown.

关 键 词：介观约瑟夫森结 坍塌和复苏现象 压缩态 

分 类 号：O488[理学—固体物理] O511.9[理学—物理]