Entanglement of a three-level atom interacting with two-modes field in a cavity

IF 1.5 4区 物理与天体物理 Q3 OPTICS
A del Rio-Lima, F J Poveda-Cuevas, O Castaños
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引用次数: 0

Abstract

The dynamics of an atom of three levels in Λ configuration interacting with a quantized field of two modes in a cavity is studied within the rotating wave approximation by considering experimental values of accessible hyperfine levels of alkali atoms. The Hamiltonian model is constructed on the basis of the direct product of the atomic states with Fock states of light. This simplified basis allows us to generalize the state of light to any quantum field. The interaction term of the Hamiltonian restricts the system to a 3D Hilbert space. The system’s time evolution results show some similarities with the effective two-level system, such as the presence of collapses and revivals and the atom-field entanglement. By an analysis of the statistics of the photons, we show that when the three-level atom is interacting with a coherent field of two modes, it is possible to control experimentally the statistics of the field to be super-Poissonian or sub-Poissonian by the choice of the initial atomic state.
在空腔中与双模场相互作用的三电平原子的纠缠
通过考虑碱原子可触及超频水平的实验值,在旋转波近似中研究了处于Λ构型的三水平原子与空腔中两种模式的量化场相互作用的动力学。哈密顿模型是在原子态与光的福克态直接乘积的基础上构建的。这种简化的基础使我们能够将光态推广到任何量子场。哈密顿的相互作用项将系统限制在三维希尔伯特空间。该系统的时间演化结果显示出与有效两级系统的一些相似之处,如存在坍缩和复苏以及原子-场纠缠。通过对光子统计量的分析,我们表明当三态原子与两种模式的相干场相互作用时,可以通过选择初始原子态来实验控制场的统计量为超泊松态或亚泊松态。
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来源期刊
CiteScore
3.60
自引率
6.20%
发文量
182
审稿时长
2.8 months
期刊介绍: Published twice-monthly (24 issues per year), Journal of Physics B: Atomic, Molecular and Optical Physics covers the study of atoms, ions, molecules and clusters, and their structure and interactions with particles, photons or fields. The journal also publishes articles dealing with those aspects of spectroscopy, quantum optics and non-linear optics, laser physics, astrophysics, plasma physics, chemical physics, optical cooling and trapping and other investigations where the objects of study are the elementary atomic, ionic or molecular properties of processes.
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