M. O. Araújo, J. C. de Aquino Carvalho, Ph. W. Courteille, A. Laliotis
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引用次数: 0
摘要
由 N 个原子组成的系统在真空中与激光束相互作用后发出的荧光中可以观察到超辐射和亚辐射等合作效应。在电介质或金属表面附近,卡西米尔-波德尔效应会改变原子的集体频移和衰减率。在这项工作中,我们利用耦合偶极子模型研究了共振表面附近的协同荧光发射。我们的研究表明,当原子靠近极化子共振与主要原子偶极子耦合重合的表面时,自由空间中预期的合作效应并不存在。在这种情况下,原子荧光与表面模式的快速衰减掩盖了合作效应。我们通过考虑蓝宝石表面前的一条铯 6D3/2 原子线来说明我们的形式主义和结果。最后,我们建议对共振元表面前的铯 6P3/2 原子进行研究,这是实验证明我们研究结果的最有希望的方案。
Cooperative atomic emission from a line of atoms interacting with a resonant plane surface
Cooperative effects such as super- and subradiance can be observed in the fluorescence emitted by a system of atoms in vacuum after interaction with a laser beam. In the vicinity of a dielectric or metallic surface, Casimir-Polder effects can modify collective atomic frequency shifts and decay rates. In this work, we study cooperative fluorescent emission next to resonant surfaces using the coupled-dipole model. We show that cooperative effects, expected in free space, are absent when the atoms are close to a surface whose polariton resonances coincide with the dominant atomic dipole coupling. In this case, cooperative effects are overshadowed by the very fast decay of the atomic fluorescence into surface modes. We illustrate our formalism and our results by considering a line of cesium atoms in front of a sapphire surface. Finally, we propose the study of cesium atoms in front of a resonant metasurface as the most promising scenario for experimentally demonstrating the results of our study.
期刊介绍:
Physical Review A (PRA) publishes important developments in the rapidly evolving areas of atomic, molecular, and optical (AMO) physics, quantum information, and related fundamental concepts.
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-Quantum optics, physics of lasers, nonlinear optics, and classical optics