Production of Squeezed State of Single Mode Cavity Field by the Coupling of Squeezed Vacuum Field Reservoir in Nonautonomous Case |
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作者姓名: | 安钧鸿 王顺金 罗洪刚 贾成龙 |
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作者单位: | [1]DepartmentofModernPhysics,LanzhouUniversity,Lanzhou730000 [2]DepartmentofPhysics,SichuanUniversity,Chengdu610065 |
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摘 要: | The dissipative and decoherence properties as well as the asymptotic behaviour of the single mode electromagnetic field interacting with the time-dependent squeezed vacuum field reservoir are investigated in detail by using the algebraic dynamical method. With the help of the left and right representations of the relevant hw(4) algebra, the dynamical symmetry of the nonautonomous master equation of the system is found to be su(1, 1). The unique equilibrium steady solution is found to be the squeezed state and any initial state of the system is proven to approach the unique squeezed state asymptotically. Thus the squeezed vacuum field reservoir is found to play the role of a squeezing mold of the cavity field.
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关 键 词: | 单模电磁场 量子波动 量子标准方程 代数动力学法 类薛定锷方程 |
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