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理论物理通讯：英文版

Cavity Field Spectra of a Cascade Three-Level Atom Interacting with a Single-Mode Field with Kerr-Like Medium

Gao, Yunfeng Yunfeng, Feng, Jian JIAN, Zhang, Gui-Ming

Published Jan 1, 2007• 0 citations
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Abstract

串联的洞地光谱有在洞中等的象 Kerr 一样的三水平的原子交往 withsingle 模式地被调查。处于纯数字状态，协调状态和挤压的真空状态的起始的地的数字结果分别地是计算的。象 Kerr 一样媒介影响，这被发现光谱尽管当原子在上面的水平时，起始的地在真空，组织。在强壮的输入地的情况中，然后，棕土状态光谱与不同高度显示出二座山峰；并且重叠状态系列 hows 有二座附近的山峰的相等的距离的多山峰结构。光谱“中央频率”与增加平均光子数字变离开反响的频率。

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在充满象 Kerr 一样媒介的洞与轻地交往的联合三水平的原子的 Hamiltonian 被导出。Schr 的一个简化分析答案 ? 系统的 dinger 方程被获得。有退化底层的螞类型原子的盒子详细被讨论。在原子和克尔系数之间的联合力量影响系统鈥檚，这被显示出动态行为，这域和集体偶极子时刻的压榨的参数的特别调整时期和摆动频率。系统的 Dynarnic 行为对原子的起始的国家敏感。关键词 Jaynes-Cummings 模型 - 压榨 - 联合原子 - 集体偶极子时刻 - 象 Kerr 一样中等 PACS 2001 4250 Dv

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Cavity Field Spectrum for System Consisting of Cascade Three-level Atom within Kerr-medium Filled Cavity

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A full quantum theory is applied to the investigation of the cavity field spectrum of a system containing the cascade three-level atom,initially in the most excited state,interacting with the single mode of a Kerr-medium filled cavity.The vacuum Rabi splitting of the system is found affected by Kerr nonlinearity,contrary to the two-level atom case.For an initial Fock-state field,the Kerr effects are mainly reflected by the asymmetry of the spectrum and a change in the number of spectral peaks if the coupling between the field and the Kerr medium is weak.The effects are also reflected by receding away from the resonant frequency of the central resonant peak in the absence of the Kerr medium if the field-medium coupling is strong.For an initial thermal field,the cavity spectrum can be a continuous band or discrete lines depending on the strength of the Kerr effect.

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串联的洞地光谱有在洞中等的象 Kerr 一样的三水平的原子交往 withsingle 模式地被调查。处于纯数字状态，协调状态和挤压的真空状态的起始的地的数字结果分别地是计算的。象 Kerr 一样媒介影响，这被发现光谱尽管当原子在上面的水平时，起始的地在真空，组织。在强壮的输入地的情况中，然后，棕土状态光谱与不同高度显示出二座山峰；并且重叠状态系列 hows 有二座附近的山峰的相等的距离的多山峰结构。光谱“中央频率”与增加平均光子数字变离开反响的频率。
The cavity field spectrum of a cascade three-level atom interacting with single-mode field with Kerr-like medium in the cavity is investigated. The numerical results for the initial field in pure number state, coherent state and squeezed vacuum state are calculated, respectively. It is found that the Kerr-like medium affects the spectral structure even though the initial field is in vacuum when the atom is in upper level. In the case of strong input field, the number state spectrum shows two peaks with different heights; and the superposition state spectrum shows a multi-peak structure with an equal distance of two neighboring peaks. The spectral ``central frequency" shifts away from the resonant frequency with the increasing of average photon number.
在充满象 Kerr 一样媒介的洞与轻地交往的联合三水平的原子的 Hamiltonian 被导出。Schr 的一个简化分析答案 ? 系统的 dinger 方程被获得。有退化底层的螞类型原子的盒子详细被讨论。在原子和克尔系数之间的联合力量影响系统鈥檚，这被显示出动态行为，这域和集体偶极子时刻的压榨的参数的特别调整时期和摆动频率。系统的 Dynarnic 行为对原子的起始的国家敏感。关键词 Jaynes-Cummings 模型 - 压榨 - 联合原子 - 集体偶极子时刻 - 象 Kerr 一样中等 PACS 2001 4250 Dv
A full quantum theory is applied to the investigation of the cavity field spectrum of a system containing the cascade three-level atom,initially in the most excited state,interacting with the single mode of a Kerr-medium filled cavity.The vacuum Rabi splitting of the system is found affected by Kerr nonlinearity,contrary to the two-level atom case.For an initial Fock-state field,the Kerr effects are mainly reflected by the asymmetry of the spectrum and a change in the number of spectral peaks if the coupling between the field and the Kerr medium is weak.The effects are also reflected by receding away from the resonant frequency of the central resonant peak in the absence of the Kerr medium if the field-medium coupling is strong.For an initial thermal field,the cavity spectrum can be a continuous band or discrete lines depending on the strength of the Kerr effect.