| 热激发态下介观压电石英晶体的量子涨落 |
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| 引用本文： | 徐兴磊.热激发态下介观压电石英晶体的量子涨落[J].广西大学学报(自然科学版),2008,33(1):91-95. |
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| 作者姓名： | 徐兴磊 |
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| 作者单位： | 菏泽学院物理系,山东,菏泽,274015;菏泽学院,量子信息与物理计算重点实验室,山东,菏泽,274015 |
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| 基金项目： | 菏泽学院自然科学基金
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山东省高等学校实验技术资助项目 |
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| 摘 要： | 利用阻尼谐振子量子化方法,将介观压电石英晶体等效电路量子化,根据热场动力学(TFD)理论,研究了介观压电石英晶体在热激发态下电流和电压的量子涨落.结果表明介观压电石英晶体中存在电流电压的量子涨落,量子涨落不仅和石英晶体等效电路的固有参数有关,而且还和激发量子数、压缩态的压缩度、压缩角及环境温度有关,且随温度的升高而增大,随时间按指数规律而衰减.
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| 关 键 词： | 热激发态 介观压电石英晶体 热压缩真空态 量子涨落 |
| 文章编号： | 1001-7445(2008)01-0091-05 |
| 修稿时间： | 2007年11月10 |
Quantum fluctuations of mesoscopic quartz piezoelectric crystal in thermal excitation state |
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| XU Xing-lei.Quantum fluctuations of mesoscopic quartz piezoelectric crystal in thermal excitation state[J].Journal of Guangxi University(Natural Science Edition),2008,33(1):91-95. |
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| Authors: | XU Xing-lei |
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| Institution: | XU Xing-lei1,2(1.Department of Physics Heze University,274015 Sh,ong China,2.Key Laboratory of Quantum Communication , Calculation,Heze University,Sh,ong 274015,China) |
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| Abstract: | The mesoscopic quartz piezoelectric crystal equivalent circuit is quantized by the method of damped harmonic oscillator quantization.And the quantum fluctuations of the current and voltage of mesoscopic quartz piezoelectric crystal equivalent circuit each branch are researched by the method of thermofield dynamics(TFD) in thermal excitation state,thermal squeezed vacuum state, thermal vacuum state and vacuum state.The result shows that the quantum fluctuations of the current and voltage of each branch are r... |
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| Keywords: | thermal excitation state mesoscopic quartz piezoelectric crystal thermal squeezed vacuum state quantum fluctuation |
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