中国科学技术大学学报
中國科學技術大學學報
중국과학기술대학학보
JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
2004年
5期
557-563
,共7页
耦合电路%量子涨落%压缩
耦閤電路%量子漲落%壓縮
우합전로%양자창락%압축
coupled electric circuit%quantum fluctuation%squeezing
对于电容耦合电路的不同实际状态,研究了完全由耦合引起的量子涨落减小问题.如果耦合电路处于基态,或者开始时耦合电路解耦,那么分回路以及耦合部分的电荷量子涨落能够降低,而电流的量子涨落却不能.如果初始时,耦合部分是断开的,那么分回路中电流的涨落不能被压缩,而耦合部分电流的涨落以及各处电荷的涨落都会得到减小.
對于電容耦閤電路的不同實際狀態,研究瞭完全由耦閤引起的量子漲落減小問題.如果耦閤電路處于基態,或者開始時耦閤電路解耦,那麽分迴路以及耦閤部分的電荷量子漲落能夠降低,而電流的量子漲落卻不能.如果初始時,耦閤部分是斷開的,那麽分迴路中電流的漲落不能被壓縮,而耦閤部分電流的漲落以及各處電荷的漲落都會得到減小.
대우전용우합전로적불동실제상태,연구료완전유우합인기적양자창락감소문제.여과우합전로처우기태,혹자개시시우합전로해우,나요분회로이급우합부분적전하양자창락능구강저,이전류적양자창락각불능.여과초시시,우합부분시단개적,나요분회로중전류적창락불능피압축,이우합부분전류적창락이급각처전하적창락도회득도감소.
For different states of the mesoscopic capacitive coupled electric circuit, reduction of quantum fluctuations induced by the coupling was studied. If the coupled circuit is at its ground state, or initially the system is decoupled, quantum fluctuations of the electric charge everywhere can be reduced, but that of the electric current can not. If initially the coupling part is open, quantum fluctuations of the current in the component circuits can not be squeezed; but quantum fluctuations of the current in the coupling part and quantum fluctuations of the charge everywhere can be reduced.