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arXiv 0908.0829quant-ph
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多光子Jaynes-Cummings模型正交场涨落中的回复-崩塌现象

Revival-collapse phenomenon in the fluctuations of quadrature field components of the multiphoton Jaynes-Cummings model

Faisal A. A. El-Orany

摘要:

本文在多光子Jaynes-Cummings模型的框架下,研究了一个初始处于上下能级相干叠加态的二能级原子与一个处于广义量子态的辐射场的相互作用系统.对于这个系统,我们表明,有一类状态的波动因子可以表现出类似于在相应的原子反转中所表现出的复兴崩溃现象(RCP)。这不仅表现在正常波动上,也表现在振幅平方波动上。此外,除了这类状态,我们一般表明,与三光子跃迁相关的涨落因子可以提供RCP类似于发生在单光子跃迁的原子反转。这些都是新的结果,其结果是,RCP发生在原子反转可以测量通过零差检测器。此外,我们还讨论了原子相对相位对这种现象的影响。

英文摘要:

In this paper we consider a system consisting of a two-level atom, initially prepared in a coherent superposition of upper and lower levels, interacting with a radiation field prepared in generalized quantum states in the framework of multiphoton Jaynes-Cummings model. For this system we show that there is a class of states for which the fluctuation factors can exhibit revival-collapse phenomenon (RCP) similar to that exhibited in the corresponding atomic inversion. This is shown not only for normal fluctuations but also for amplitude-squared fluctuations. Furthermore, apart from this class of states we generally demonstrate that the fluctuation factors associated with three-photon transition can provide RCP similar to that occurring in the atomic inversion of the one-photon transition. These are novel results and their consequence is that RCP occurred in the atomic inversion can be measured via a homodyne detector. Furthermore, we discuss the influence of the atomic relative phases on such phenomenon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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