| 非耗散介观LC电路中电荷和电流的压缩与反压缩效应 |
| |
| 引用本文： | 嵇英华,乐建新,雷敏生.非耗散介观LC电路中电荷和电流的压缩与反压缩效应[J].光子学报,2001,30(12):1504-1508. |
| |
| 作者姓名： | 嵇英华 乐建新 雷敏生 |
| |
| 作者单位： | 江西师范大学物理系,南昌,330027 |
| |
| 基金项目： | 江西省自然科学基金 ( No.0 0 1 0 0 4，0 1 1 0 0 4 )资助项目~~ |
| |
| 摘 要： | 利用全量子理论,对非耗散介观LC电路中电荷和电流的压缩与反压缩效应进行了详细的讨论.结果表明:1)通过保持非耗散介观LC电路的固有频率不变,而使电感参量作阶跃函数变化,就可将介观LC电路由初始的真空态经相干态而演化到压缩相干态;并由此进一步分别制备出电荷与电流的压缩最小测不准态;2)通过控制电感参量的改变,可使电荷与电流的量子涨落呈现出压缩与反压缩效应.
|
| 关 键 词： | 非耗散介观LC电路 单位阶跃函数 压缩算符 压缩相干态 压缩最小测不准态 压缩与反压缩效应 |
| 收稿时间： | 2001-05-17 |
| 修稿时间： | 2001年5月17日 |
SQUEEZING AND ANTISQUEEZING EFFECT OFCHARGE AND CURRENT OF A NON-DISSIPATIVE MESOSCOPIC LC CIRCUIT |
| |
| Ji Yinghua,Le Jianxin,Lei Minsheng.SQUEEZING AND ANTISQUEEZING EFFECT OFCHARGE AND CURRENT OF A NON-DISSIPATIVE MESOSCOPIC LC CIRCUIT[J].Acta Photonica Sinica,2001,30(12):1504-1508. |
| |
| Authors: | Ji Yinghua Le Jianxin Lei Minsheng |
| |
| Institution: | Ji Yinghua,Le Jianxin,Lei Minsheng Department of Physics,Jiangxi Normal University,Nanchang 330027 |
| |
| Abstract: | In this paper,the squeezing and antisqueezing effects of the charge and current of non-dissipative mesoscopic LC circuit are studied in detail by using the complete quantum theory.The results show the following conclusions:1)By keeping the frequency of non-dissipative mesoscopic LC circuit a constant and its parameter varying with the step function,the quantum state of the circuit evolves to the squeezed coherent state from the initial vacuum state through coherent state,then further the squeezed minimum uncertainty state of charge or current can be generated.2)The squeezing and antisqueezing effect of the quantum fluctuations appears in the circuit by adjusting its inductor’s parameter under the effect of external source. |
| |
| Keywords: | Non-dissipative mesoscopic LC circuit Unit step function Squeezed operator Squeezed coherent state Squeezed minimum uncertainty state |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《光子学报》浏览原始摘要信息 |
| 点击此处可从《光子学报》下载免费的PDF全文 |
