Dynamics of a two-level atom in the presence of a medium-assisted thermal field

IF 1.2 4区物理与天体物理 Q4 OPTICS

Laser Physics Pub Date : 2024-07-15 DOI:10.1088/1555-6611/ad4bb5

Razieh Gonouiezadeh and Hassan Safari

引用次数: 0

Abstract

In this paper, the time evolution of a two-level atom in the presence of a medium-assisted thermal field is explored through which the formula for the decay rate of an excited atom is generalized in two aspects. The obtained formula applies to a thermal electromagnetic field as well as to the presence of an arbitrary arrangement of magnetoelectric media. In order to be general with respect to the material environment, the Green’s function approach is used. It is shown that the non-zero temperature contributes to the decay rate via an additive term that is equal to the zero-temperature result multiplied by two times the photon number at the atomic transition frequency.

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介质辅助热场作用下的两级原子动力学

本文探讨了一个两级原子在介质辅助热场存在下的时间演化，通过该演化，激发原子的衰变率公式在两个方面得到了推广。所得到的公式适用于热电磁场以及任意排列的磁电介质。为了在材料环境方面具有通用性，使用了格林函数方法。结果表明，非零温度通过一个加法项对衰变率有影响，该加法项等于零温度结果乘以原子转变频率光子数的两倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Laser Physics 物理-光学

CiteScore

2.60

自引率

8.30%

发文量

127

审稿时长

2.2 months

期刊介绍： Laser Physics offers a comprehensive view of theoretical and experimental laser research and applications. Articles cover every aspect of modern laser physics and quantum electronics, emphasizing physical effects in various media (solid, gaseous, liquid) leading to the generation of laser radiation; peculiarities of propagation of laser radiation; problems involving impact of laser radiation on various substances and the emerging physical effects, including coherent ones; the applied use of lasers and laser spectroscopy; the processing and storage of information; and more. The full list of subject areas covered is as follows: -physics of lasers- fibre optics and fibre lasers- quantum optics and quantum information science- ultrafast optics and strong-field physics- nonlinear optics- physics of cold trapped atoms- laser methods in chemistry, biology, medicine and ecology- laser spectroscopy- novel laser materials and lasers- optics of nanomaterials- interaction of laser radiation with matter- laser interaction with solids- photonics

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