| Quantum fluctuations of mesoscopic damped double resonance RLC circuit with mutual capacitance-inductance coupling |
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| 作者姓名： | 徐兴磊 李洪奇 王继锁 |
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| 作者单位： | Department of Physics, Heze University, Heze
274015, China;Key Laboratory of Quantum Communication and Calculation, Heze
University, Heze 274015, China;Department of Physics, Heze University, Heze
274015, China;Key Laboratory of Quantum Communication and Calculation, Heze
University, Heze 274015, China;Department of Physics, Liaocheng University, Liaocheng 252059,
China |
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| 基金项目： | Project supported by the Natural Science Foundation of
Heze University of Shandong Province, China (Grant No~XY05WL01), the University
Experimental Technology Foundation of Shandong Province, China (Grant
No~S04W138),
the Natural Science Foundation of S |
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| 摘 要： | Based on the scheme of damped harmonic oscillator quantization and thermo-field dynamics （TFD）, the quantization of mesoscopic damped double resonance RLC circuit with mutual capacitance-inductance coupling is proposed. The quantum fluctuations of charge and current of each loop in a squeezed vacuum state are studied in the thermal excitation case. It is shown that the fluctuations not only depend on circuit inherent parameters, but also rely on excitation quantum number and squeezing parameter. Moreover, due to the finite environmental temperature and damped resistance, the fluctuations increase with the temperature rising, and decay with time.
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| 关 键 词： | RLC回路 线性转化 热量激励状态 量子 |
| 收稿时间： | 2006-10-16 |
| 修稿时间： | 2/9/2007 12:00:00 AM |
Quantum fluctuations of mesoscopic damped double resonance RLC circuit with mutual capacitance--inductance coupling in thermal excitation state |
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| Xu Xing-Lei,Li Hong-Qi and Wang Ji-Suo.Quantum fluctuations of mesoscopic damped double resonance RLC circuit with mutual capacitance-inductance coupling[J].Chinese Physics B,2007,16(8):2462-2470. |
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| Authors: | Xu Xing-Lei Li Hong-Qi and Wang Ji-Suo |
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| Institution: | 1.Department of Physics, Heze University, Heze 274015, China ;2.Key Laboratory of Quantum Communication and Calculation, Heze University, Heze 274015, China ;3. Department of Physics, Liaocheng University, Liaocheng 252059, China |
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| Abstract: | Based on the scheme of damped harmonic oscillator quantization and
thermo-field dynamics (TFD), the quantization of mesoscopic damped
double resonance RLC circuit with mutual capacitance--inductance
coupling is proposed. The quantum fluctuations of charge and current
of each loop in a
squeezed vacuum state are studied in the thermal excitation case. It is shown
that the fluctuations not only depend on circuit inherent parameters,
but also rely on excitation quantum number and squeezing parameter.
Moreover, due to the finite environmental temperature and
damped resistance, the fluctuations increase with the temperature rising,
and decay with time. |
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| Keywords: | mesoscopic double resonance RLC
circuit linear transformation thermal excitation state quantum fluctuation |
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